Birgit's apartment is in a great location. The U-bahn is directly across the street in elevated tracks, but it was super quite and a peaceful spot with big windows to watch the sunrise over Vienna. We enjoyed the Opera just two stops away (and got to ride with several performers!) We spent Christmas together with our colleague-aged kids and several of their friends. The kitchen was well equipped for making a full meal. There is an elevator which was nice for those that don't like stairs.