This hotel has no rooms available. Find other hotels in %s.

This hotel will open its doors on %s. If you don't want to wait, we suggest other hotels in %s.

There are no available hotels in %s on %s.

Due to the conditions of the hotel, the maximum number of guests per room has been modified. Please check the details.

The number of guests indicated per room is higher than the number of guests allowed. Add a new room and include more guests.

If you need more rooms, please call the number below to proceed with your booking.

Please choose other days or try another destination.

There are no hotels available in %s on the requested dates.

Please choose other days or try another %s hotel.

%s has no rooms available on the requested dates

Register or join MeliáRewards to use this feature.

Only if you are a MeliáRewards member, you will be able to use this functionality. Join our program and enjoy discounts and great benefits.

Sign in or sign up to save your favourite hotels

I have read and accept the %s, the %s and the information on data processing in the %s.

I want to join MeliáRewards and agree with the programme terms and conditions and the MHI Privacy Policy. If you do not want to receive promotional messages,

The total rate will be charged on your card when making the booking.

Exclusive MeliáRewards flexible rate that allows you to modify or cancel your reservation free of charge.

Our team looks forward to welcoming you to %s.

We have sent the details to your e-mail address %s

Personalise your stay by adding exclusive services and unique amenities available at %s.

You’ll be back. Because of our unique way of making you feel special. Because you want to be in the right place, enjoy the best gastronomy and sleep in unique rooms conceived for your wellbeing. Enjoy every destination with Meliá and make every moment of your trip unforgettable.

Soul Matters

Enjoy maximum satisfaction and comfort with the most personalised service and the most exclusive products in privileged areas of the hotel.

Step into another world

The Level

Meliá

Open Source Summit is the premier event for open source developers, technologists, and community leaders to collaborate, share information, solve problems, and gain knowledge, furthering open source innovation and ensuring a sustainable open source ecosystem.

Welcome to the Open Source Summit Europe 2024

Book your room for the Open Source Summit Europe 2024

A warm welcome to our distinguished guests. We trust you will enjoy a pleasant stay at our hotel and extend our best wishes for a wonderful experience at the Open Source Summit Europe 2024. May your time with us be both comfortable and enriching.

Meliá Hotels International welcomes you to the beautiful city of Vienna and wishing you an unforgettable stay.

Open Source Summit Europe 2024

Elegant, avant-garde, and located in the tallest skyscraper in Austria, designed by Dominique Perrault. With spectacular views of the city and the Danube river, the whole of Vienna revolves around this space. Rooms with floor-to-ceiling windows. Dinner with views at 57 restaurant and the 57 lounge on a 220-meter high terrace. And The Level rooms to raise the experience even higher with the most exclusive service. The perfect place from which to admire this modern and serene destination: Vienna, the city of music.

In the DC Tower, the tallest skyscraper in Austria, overlooking Vienna and the Danube

Prime location

The UN Office, Austria Center Vienna and Danube island

Near everything

220 meters above ground, with an international menu with superior-quality local products

57 Restaurant

Exclusive service with access to a private lounge on the 57th floor

Work out with views of the city and the Danube

Fitness center

More than 1000 m2 of flexible space, including a ballroom and 9 event rooms