Directly under the Vienna State Opera, one of Vienna's biggest nightclubs awaits you with international standards, a diverse program and a sophisticated atmosphere. O - the club offers a mix of festival feeling and hit ecstasy, with well-known international acts from the electronic music scene on Fridays and the best hits of the 90s on Saturdays. As a hotel guest you enjoy special benefits, which include the fast lane and a welcome drink as well as your own table booking service* with all the advantages (own entrance, V.I.P checkroom and toilets, own waiter/bottle service).