We were a couple who stayed at Anna's place for two nights. She was very nice to us and did the check in herself. The room is really cool decorated, and the bed where good to sleep in. We liked staying there, the location is great. It is very close to Schönbrunn Palace and about 10 minutes with metro to the city center. Talked to some of her flatmates, and they were nice to us as well. Of course you notice that there live a lot of people there, the kithen aren't clean all the time, but we enjoyed our stay!