I'll start with the positive things: the room was pretty much as advertised. Small, one double bed, shared bathroom at the back. Priscilla seemed like a very nice person from the limited conact we had with her, and it was nice that you could sit outside in the garden.
However, there were a few issues. The property is advertised as being close to Schönbrunn. It takes well over half an hour by public transport to get there, even though it is shorter if you choose to go by car. The house is also rather far from any bus stations (The closest one was under construction, which we were not told about) and you should be prepared to walk a while.
The room wasn't too dirty aside from some dog hair, but the bathroom was slightly grimy. Also, the sink gets very dirty because there seems to be a problem with the washing machine next to it. The utensils in the common kitchen were not very clean. The place also smells quite strongly of the dog, so it would be a good idea to keep the windows open to air the place.