Hotel Mercure Wien Westbahnhof 4 stars

Customer review rating (ALL Rating) 4.2/5 1,786 reviews

Hotel Mercure Wien Westbahnhof - Image 1
Hotel Mercure Wien Westbahnhof - Image 2
Hotel Mercure Wien Westbahnhof - Image 3
Hotel Mercure Wien Westbahnhof - Image 4

Description

Hotel extras

  • Central location & ideal public transport connections in Vienna

  • Rich and varied breakfast buffet

  • Westside restaurant featuring a modern, international cuisine

  • 6 conference rooms with personalized event planning

  • On-site parking garage with 52 parking spaces

Our accommodation(s)

Book this hotel
Room 1

During your visit to Vienna, the low overnight rate is the star attraction; these rooms do not include the usual Mercure standard features such as a safe, mini-bar, kettle, and full air conditioning, and only have twin beds (2 x 90 x 200 cm).

Max. number of persons
2
Area
From 18 / 193 sq ft

Bedding

Single bed(s) x2

Extra bed in room for child on request

Baby crib on request

Bathroom

Bathroom Facilities

  • Bathroom products
  • Hair dryer in bathroom
  • Make-up/magnifying mirror
  • Mirror
  • Towel rack

Media And Technology

Complementary elements

  • Radio

Internet Facilities

  • Wireless internet in your room

Phone Facilities

  • Direct dial telephoneAdditional charge

Tv Facilities

  • Satellite/cable colour TV
  • 26'/66 cm screen
  • Flat screen

Service And Equipment

Accessibility And Security

  • Audible smoke alarms in rooms
  • Dead bolt in rooms
  • Emergency info in rooms
  • Keycard-operated door locks
  • Message alert
  • Room interior entrance only
  • Security Peephole
  • Smoke alarm in room

Comfort Features

  • Blackout Facilities
  • Hair dryer
  • Opening windows

Electric Facilities

  • 220/240 V AC

Room Services

  • Operator wake up call

Working Area

  • Business Desk
  • 2 pers. max
  • 18 / 193 sq ft
  • Bedding 2 x Single bed(s)

Our superior rooms feature a choice of double bed (160 x 200 cm) or 2 separate beds (90 x 200 cm), a TV, desk, refrigerator, safe, kettle, tea & coffee, bathtub, hairdryer and air conditioning.

Max. number of persons
2
Area
From 18 / 193 sq ft

Bedding

Single bed(s) x2

Extra bed in room for child on request

Extra bed in room for adult on request

Baby crib on request

Food And Beverage

Food And Beverage Facilities

  • Kettle
  • Mini Bar

Bathroom

Bathroom Facilities

  • Hair dryer in bathroom

Media And Technology

Complementary elements

  • Radio

Internet Facilities

  • Data port in room
  • RJ 45 Outlet

Phone Facilities

  • Direct dial telephoneAdditional charge

Tv Facilities

  • Satellite/cable colour TV
  • TV with on-screen billing info
  • 26'/66 cm screen
  • Flat screen

Service And Equipment

Accessibility And Security

  • Audible smoke alarms in rooms
  • Dead bolt in rooms
  • Emergency info in rooms
  • Keycard-operated door locks
  • Message alert
  • Room interior entrance only
  • Safe deposit box in room
  • Security Peephole
  • Self-closing rooms
  • Smoke alarm in room

Comfort Features

  • Blackout Facilities
  • Opening windows

Electric Facilities

  • 220/240 V AC

Room Services

  • Operator wake up call

Temperature Air Control

  • Air Conditioning
  • Pulse Air

Book one of our spacious privilege rooms featuring a double bed (160 x 200 cm), TV, desk electric kettle, Nespresso machine, tea & coffee, refrigerator, bathtub and air conditioning.

Max. number of persons
2
Area
From 20 / 215 sq ft

Bedding

Single bed(s) x2

Extra bed in room for child on request

Baby crib on request

Food And Beverage

Food And Beverage Facilities

  • Coffee maker
  • Coffee/tea making facilities
  • Kettle
  • Mini Bar
  • Free in Room Mineral Water

Bathroom

Bathroom Facilities

  • Bathrobe
  • Hair dryer in bathroom

Media And Technology

Complementary elements

  • Radio

Internet Facilities

  • Data port in room
  • RJ 45 Outlet

Phone Facilities

  • Direct dial telephoneAdditional charge

Tv Facilities

  • Satellite/cable colour TV
  • TV with on-screen billing info
  • 26'/66 cm screen
  • Flat screen

Service And Equipment

Accessibility And Security

  • Audible smoke alarms in rooms
  • Dead bolt in rooms
  • Emergency info in rooms
  • Keycard-operated door locks
  • Message alert
  • Room interior entrance only
  • Safe deposit box in room
  • Security Peephole
  • Self-closing rooms
  • Smoke alarm in room

Comfort Features

  • Blackout Facilities
  • Opening windows
  • Shoe polisher

Electric Facilities

  • 220/240 V AC

Room Services

  • Operator wake up call

Temperature Air Control

  • Air Conditioning

Free WIFI, safe, coffee and tea making facilities and a bathroom with bathtub or shower. With air conditioning. Room for multiple guests.

Max. number of persons
3
Area
From 33 / 355 sq ft

Bedding

Single bed(s) x1

Double bed(s) x1

Bathroom

Bathroom Facilities

  • Hair dryer in bathroom

Media And Technology

Complementary elements

  • Radio

Phone Facilities

  • Direct dial telephoneAdditional charge

Tv Facilities

  • Satellite/cable colour TV

Service And Equipment

Accessibility And Security

  • Audible smoke alarms in rooms
  • Dead bolt in rooms
  • Emergency info in rooms
  • Keycard-operated door locks
  • Message alert
  • Room interior entrance only
  • Security Peephole
  • Smoke alarm in room

Comfort Features

  • Blackout Facilities
  • Opening windows

Electric Facilities

  • 220/240 V AC

Room Services

  • Operator wake up call

Temperature Air Control

  • Air Conditioning

Connecting room with a single bed and a double bed. Free WIFI and a bathroom with bathtub or shower. No air conditioning. Adjacent to another room.

Max. number of persons
3
Area
From 33 / 355 sq ft

Bedding

Single bed(s) x1

Twin bed(s) x1

Bathroom

Bathroom Facilities

  • Hair dryer in bathroom

Media And Technology

Complementary elements

  • Radio

Phone Facilities

  • Direct dial telephoneAdditional charge

Tv Facilities

  • Satellite/cable colour TV

Service And Equipment

Accessibility And Security

  • Audible smoke alarms in rooms
  • Dead bolt in rooms
  • Emergency info in rooms
  • Keycard-operated door locks
  • Message alert
  • Room interior entrance only
  • Security Peephole
  • Smoke alarm in room

Comfort Features

  • Blackout Facilities
  • Opening windows

Electric Facilities

  • 220/240 V AC

Room Services

  • Operator wake up call

Hotel location

Hotel Mercure Wien Westbahnhof

Felberstrasse 4
1150 VIENNA
Austria

GPS:48.198155, 16.337507

Access and transport

Hotel services

Check-in from - Check out up to

On site
  • Car park
  • Pets welcome
  • Restaurant
  • Wi-Fi
  • Breakfast
  • Bar
  • Meeting rooms
  • 100% Non Smoking Property
  • Room service
  • 252 rooms
  • 5 connecting rooms
  • 252 non-smoking rooms
  • 8 floors

Languages spoken at the hotel

  • German
  • English

100% Non Smoking Property

Laundry / Valet Services

  • Dry cleaning / Ironing

Wi-Fi

  • High Speed WiFi
  • WiFi at the hotel
  • WiFi in the communal areas

Desk equipment available

  • Shoe shine machine

Safe deposit box at reception

  • Safe deposit box at reception

Check In & Check-out facilities

  • Express check-in
  • Express check-out
  • Late Checkout

Pets

Pets allowed Additional charge

Catering

One Restaurant

One Bar

Room service

  • Cold snacks
  • Hot meals

Breakfast

  • Buffet Additional charge

Business

6 Meeting rooms

  • On site
  • Indoor parking
  • Private
  • Max Limited Height: 2 m / 6.562 ft
  • Parking pricing: 25.00 25 EUR Per day

WESTSIDE

At Westside, urban living meets modern industrial style. The perfect blend of traditional Austrian cuisine and international classics ensures a dining experience that caters to every taste.

Cooking style
International
Capacity
100
Accessibility
Accessible service
Opening hours
Monday
  • -
Tuesday
  • -
Wednesday
  • -
Thursday
  • -
Friday
  • -
Saturday
  • -
Sunday
  • -
Subsequent opening hours

Other informations

Services

  • Air conditioning
  • Wheelchair access
  • Free Wireless internet (WiFi)
  • Non Smoking Area

Payment

  • Cash
  • Credit card

Credit cards

  • Mastercard
  • Maestro
  • Visa

At Westside, urban living meets modern industrial style. The perfect blend of traditional Austrian cuisine and international classics ensures a dining experience that caters to every taste.

The chic Westside Bar in Hotel Mercure Wien Westbahnhof is the ideal after-work meeting spot. Round off a successful day with a glass of Mercure vintage wine, tasty bites or a refreshing cocktail.

Start your day with a satisfying breakfast served from 6:30 am. Choose from a selection of over 160 delicious treats, including coffee and Viennese specialties. Breakfast room service is also available.

Our guest reviews

Our guest reviews

100% genuine reviews from our guests

Find out more

ALL Rating  4.2/5  1,786 reviews

Customer review rating 5.0/5

Marcin G. Families - Confirmed reviews ALL

Dear Marcin G., Thank you so much for staying with us again. It is always our pleasure to have you as our guest. We are very pleased that you enjoyed our services and your overall stay with us one more time. As we are highly committed to providing quality services for our guests, we really do appreciate positive feedback such as yours. We would like to thank you for the stellar review, and the amazing comment. We hope to see you soon again and that our services will ensure another rewarding and enjoyable visit with us. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 5.0/5

Kubilay K. Friends - Confirmed reviews ALL

Dear Kubilay k., We highly appreciate and value your feedback and consider it a highlight in our daily routine as hosts. We are very pleased that you gave us the highest ratings in almost all categories. We will gladly pass along these top reviews and positive remarks on our services to the respective staff members and employees. Your satisfaction both validates our team’s dedicated daily efforts and highly motivates us to keep striving for excellent services in the future. We are very happy that you felt so comfortable with us and that you really enjoyed our amenities. We are looking forward to welcoming you back as a guest hopefully soon. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 1.0/5

Ankit D. Business - Confirmed reviews ALL

Dear Ankit D., Thank you very much for your visit. We regret that your experience with our hotel and our service did not meet your expectations; please allow us to express our sincerest apologies. Please rest assured that we are taking the appropriate measures to address the problems and prevent future occurrence. We appreciate your sharing of your experiences, so that we can improve the quality of our service. Therefore, we hope that you will give us the opportunity to better serve you in the near future, and your next visit will be more pleasant as the previous one. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Alana J. Friends - Confirmed reviews ALL

Dear Alana J., Thank you very much for your visit. We are very pleased that you rated us highly in almost all categories and are delighted that you enjoyed your stay with us. It is of great importance to us that you were satisfied with our services. The high ratings on the staff made us very happy, we would like to say a sincere “thank you” again. We hope to welcome you as our guest soon again. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Smart I. O. Families - Confirmed reviews ALL

Dear Smart I. O., Thank you very much for your visit. We are very pleased that you rated us highly in almost all categories and are delighted that you enjoyed your stay with us. It is of great importance to us that you were satisfied with our services. The high ratings on the staff made us very happy, we would like to say a sincere “thank you” again. We hope to welcome you as our guest soon again. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Dear Marcin G., Thank you so much for staying with us again. It is always our pleasure to have you as our guest. We are very pleased that you enjoyed our services and your overall stay with us one more time. As we are highly committed to providing quality services for our guests, we really do appreciate positive feedback such as yours. We would like to thank you for the stellar review, and the amazing comment. We hope to see you soon again and that our services will ensure another rewarding and enjoyable visit with us. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 5.0/5

Kubilay K. Friends - Confirmed reviews ALL

The friendly service and staff are brilliant. Thank you for everything.

Dear Kubilay k., We highly appreciate and value your feedback and consider it a highlight in our daily routine as hosts. We are very pleased that you gave us the highest ratings in almost all categories. We will gladly pass along these top reviews and positive remarks on our services to the respective staff members and employees. Your satisfaction both validates our team’s dedicated daily efforts and highly motivates us to keep striving for excellent services in the future. We are very happy that you felt so comfortable with us and that you really enjoyed our amenities. We are looking forward to welcoming you back as a guest hopefully soon. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 1.0/5

Ankit D. Business - Confirmed reviews ALL

I had better stay elsewhere.

Dear Ankit D., Thank you very much for your visit. We regret that your experience with our hotel and our service did not meet your expectations; please allow us to express our sincerest apologies. Please rest assured that we are taking the appropriate measures to address the problems and prevent future occurrence. We appreciate your sharing of your experiences, so that we can improve the quality of our service. Therefore, we hope that you will give us the opportunity to better serve you in the near future, and your next visit will be more pleasant as the previous one. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Alana J. Friends - Confirmed reviews ALL

It was a comfortable stay, close to public transport

Dear Alana J., Thank you very much for your visit. We are very pleased that you rated us highly in almost all categories and are delighted that you enjoyed your stay with us. It is of great importance to us that you were satisfied with our services. The high ratings on the staff made us very happy, we would like to say a sincere “thank you” again. We hope to welcome you as our guest soon again. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Smart I. O. Families - Confirmed reviews ALL

Easy Accessibility but No Aircon which is a MUST this summer otherwise, it would have been 10/10

Dear Smart I. O., Thank you very much for your visit. We are very pleased that you rated us highly in almost all categories and are delighted that you enjoyed your stay with us. It is of great importance to us that you were satisfied with our services. The high ratings on the staff made us very happy, we would like to say a sincere “thank you” again. We hope to welcome you as our guest soon again. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Tuan N. Solo - Confirmed reviews ALL

Return customer. Great location.

Dear Tuan N., Thank you very much for your visit. We are very pleased that you rated us highly in almost all categories and are delighted that you enjoyed your stay with us. It is of great importance to us that you were satisfied with our services. The high ratings on the staff made us very happy, we would like to say a sincere “thank you” again. We hope to welcome you as our guest soon again. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 2.5/5

Andrea P. Solo - Confirmed reviews ALL

Nice reception staff. Helpful for trains

Dear Andrea Pettet, Thank you very much for your visit and the positive remarks on the colleagues. We are very sorry that our hotel did not appeal to you. We sincerely apologize for any inconvenience and ask for your understanding for a hotel that - although still in good shape - lacks some top modern details and shows signs of wear due to its age. It would be a pleasure to welcome you back to Wien and to our hotel. With best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Oana M. Families - Confirmed reviews ALL

The bed was very comfortable, and the location was excellent, with a U-Bahn station nearby, making it very easy to get around. The hotel also has its own parking lot, which is small but secure. There are grocery stores within walking distance, which is very convenient. The staff could be a little friendlier, but overall, we had a pleasant stay and would recommend the hotel.

Dear Oana M., Thank you for your visit, the positive feedback, and also for your critique and suggestions on improvement regarding the hospitality. We take your input very seriously and we have already discussed it with the managers and colleagues in charge. Please accept our apologies for the inconveniences you had to deal with. We sincerely hope that your next visit will leave you completely satisfied. We would love to welcome you back. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 1.0/5

Jad F. Solo - Confirmed reviews ALL

With the expectations from a mercure hotel I was extremely disappointed to see a single bed with a single pillow with no extra ones and the cover being way too small for an adult size. Moreover, I had to struggle to find a charging port with only one available next to the bed and one on the corridor, the shower had rust and dirty marks on it. The mattress had a weird yellow, reddish color. The only redeeming factor of this hotel is its location near a main train station and a decent breakfast.

Dear Jad F., We sincerely apologize for the deficiencies that unfortunately caused inconveniences for you. We appreciate your honest critique which will be the basis for discussions within our local team - and a careful evaluation of the root of these problems. On behalf of the entire team, we would like to ask you to come back once more for an opportunity to prove to you that we can do a much better job. We would be honored to welcome you again. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Serkan K. Families - Confirmed reviews ALL

The receptionist that checked me in was super nice and helpful. The room was a little cramped and I never like rooms with carpet. But the stay was OK overall.

Dear Serkan K., We are always pleased to learn that our guests have enjoyed their visit with us and that our commitment and efforts to provide the best services possible have been a success. Therefore, on behalf of my entire staff, we would like to send a sincere “thank you” for your feedback. It is rewarding for us to know when our services leave you satisfied and to receive respective ratings and great remarks on the colleague in particular. Your comments encourage us to continue to provide the best possible services for our guests. We are looking forward to welcoming you as a guest in our hotel again. The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Petteri H. Friends - Confirmed reviews ALL

Nice

Dear Petteri H., Thank you very much for your visit. Of course, we do acknowledge, that there is still “room for improvement” in some category. Please be assured that the particular issues will be addressed and discussed within our local team and that we will try our best to improve in these areas even more. We are looking forward to your next visit, which we hope will leave you completely satisfied. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Zsolt J. Families - Confirmed reviews ALL

Staff on check in are not polite, I pay with cash and staff give back note and impolite speech. In beginning say, rooms not ready (at 2:30pm), but after 5 min have rooms. Till I stay in reception, have one other guest, she show in mobile that have dirty in fridge, she need cleaner, but staff say her, can only change room. She refused the room change, only second staff solve problem.

Dear Zsolt J., We would like to offer our sincere apologies for the behaviour of the reception staff. That is unacceptable and below our standards. Please rest assured that we have already looked into this and taken steps - and we will make sure that negative experiences are a rare exception in the future. We feel very bad for the inconveniences you had to deal with. Now we would like to ask you to give us another chance. We very much hope that on your next visit our services will leave you completely satisfied. We would be honored to welcome you back. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 5.0/5

Shaun U. Friends - Confirmed reviews ALL

Absolutely wonderful stay! Everything was perfect from start to finish. The hotel was very clean, and the reception staff were extremely friendly, helpful, and welcoming. I was lucky enough to receive a beautiful apartment, and the early check-in was a fantastic bonus. Everything exceeded my expectations, and I really enjoyed my stay. Thank you for the excellent service — I would definitely stay here again and highly recommend this hotel! ⭐⭐⭐⭐⭐

Dear Shaun U., We highly appreciate and value your feedback and consider it a highlight in our daily routine as hosts. We are very pleased that you gave us the highest ratings in almost all categories. We will gladly pass along these top reviews and positive remarks on our services to the respective staff members and employees. Your satisfaction both validates our team’s dedicated daily efforts and highly motivates us to keep striving for excellent services in the future. We are very happy that you felt so comfortable with us and that you really enjoyed our amenities. We are looking forward to welcoming you back as a guest hopefully soon. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Anonymous Friends - Confirmed reviews ALL

Good exp.

Customer review rating 4.5/5

Anonymous Couples - Confirmed reviews ALL

Comfortable and practical for travelling.

Customer review rating 2.5/5

Anonymous Solo - Confirmed reviews ALL

budget room, no A/C at the summer time.

Customer review rating 3.0/5

Anonymous Couples - Confirmed reviews ALL

We are Platinum members and upon checking in with Maxim at reception he was very pleasant and gave us a room upgrade and his service was excellent. Upon going to the restaurant which is in house we were provided with our complimentary glass of wine and beer which was appreciated. I asked the waiter if he wanted to see our All Accor card which offers the 30 % dining discount off food. At that stage we were the only guests in the dining room. He advised they do not provide the discount as the restaurant is now privately owned. After checking, I did show him that on the list of hotels that accept the card The Mercure Wien Westbahnhof was on the list and this was presenting a false impression that they would accept the card discount when in fact they don't. We would normally have been entitled to free breakfast as platinum members but this was not also available. Our room was comfortbale and we appreciated the upgrade and free drinks. This was strange they honoured that but refused the dining discount. That made for a disappointing stay.

Customer review rating 0.5/5

Marjorie D. C. Families - Confirmed reviews ALL

Very disappointed with the treatment regarding the Welcome Drink. The hotel hasn't been updated, and the only positive aspects were the cleanliness and early check-in. The attendant at the bar refused to provide the drink or information after I asked about the Welcome Drink offers. Rude, offended me twice, and 20 minutes later, he gave 2 beers to two other men. Never staying at this hotel again, for sure.

Dear Marjorie D. C., We sincerely apologize for the deficiencies and human errors that unfortunately caused inconveniences for you. Sorry to learn that the bar service was less than satisfactory. We appreciate your honest critique which will be the basis for discussions within our local team - and a careful evaluation of the root of these problems. Rest assured that we will take necessary measures so that an experience like yours will continue to be the rare exception. On behalf of the entire team, we would like to ask you to come back once more for an opportunity to prove to you that we can do a much better job. We would be honored to welcome you again at Mercure Hotel Wien Westbahnhof. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 5.0/5

Ionita M. Families - Confirmed reviews ALL

I liked the hotel's location, being situated close to the metro station, train station, tram, supermarket, and the city center. The staff was polite, welcoming, and prompt. The hotel room and the bathroom were clean, well-kept, and well-maintained.

Dear Ionita M., We highly appreciate and value your feedback and consider it a highlight in our daily routine as hosts. We are very pleased that you gave us the highest ratings in almost all categories. We will gladly pass along these top reviews and positive remarks on our services to the respective staff members and employees. Your satisfaction both validates our team’s dedicated daily efforts and highly motivates us to keep striving for excellent services in the future. We are very happy that you felt so comfortable with us. We are looking forward to welcoming you back as a guest hopefully soon. Yours sincerely, The team of the Mercure Hotel Wien Westbahnhof

Customer review rating 4.0/5

Remedios C. C. Families - Confirmed reviews ALL

This is the second occasions I have stayed with you for the following reasons- it's central location , accessibility to public transport, and good shopping location. The only thing I am not comfortable with, the room I was allocated, the double bed I was sharing with my sister is uncomfortable whether is due for replacement? Secondly, it was not clear in my booking that there are room categories in your hotel. The first room allocated to me has only electric fan and because the weather forecast during our stay was hot, I have asked for room with air conditioning, but I have to pay 105 Euros extra on top of what I had already paid in advance. As a member of All accor, I was expecting a member advantage?

Dear REMEDIOS C. C., Thank you for your visit, the positive remarks on the location, and also for your critique and suggestions on improvement. We take your input very seriously and we have already discussed it with the managers and colleagues in charge. Please accept our apologies for the inconveniences you had to deal with. We sincerely hope that your next visit will leave you completely satisfied. We would love to welcome you back. Best regards, The team of the Mercure Hotel Wien Westbahnhof

Other web-users rate our hotel

  • 1,968 reviews 9.4/10 Location
  • 2,059 reviews 5.5/10 Room
  • 1,594 reviews 7.8/10 Service
  • 35 reviews 8.6/10 WiFi
  • 945 reviews 4.5/10 Comfort
  • 785 reviews 7.8/10 Cleanliness
  • 665 reviews 2.8/10 Vibe
  • 604 reviews 7.2/10 Value

Powered by Trustyou

Frequently asked questions

Our other establishments nearby

All our hotels in Vienna Hotels