This is an amazing place and we really enjoyed our stay. The location is perfect (just across the Secession building by Karlsplatz). The apartment is basically in an art gallery, which means no private entrance and during the day we could hear people, but that didn't bother us and we actually thought it was really special. There was also amazing art in all the rooms. It was spacious (4 adults, one infant was no problem), perfectly clean and the communication with the host was excellent. There is an elevator, two bathrooms (one toilet) and washing machine.