My wife and I had a fabulous experience in Vienna! The apartment was exactly as described and very clean and comfortable. It was located just a short walk to the underground which made it extremely easy for getting around to the sites we wanted to visit. I agree with most comments about the bar across the street from the bedroom. There was some noise later in the evening but it didn't seem to affect our sleep as it quieted down after 1am. We ordered our own taxi and the driver had no difficulty finding the address. We would definitely stay at Krzysztof's apartment again!