Valentina's place was fine. However, one night it seems she went out and brought someone home with her. I don't particularly mind what people do on their own time, but this was late at night and they were not acting particularly quiet - particularly a problem when the man barged into our room as we were trying to sleep. Thankfully they left after running around the apartment a bit, but we felt that was still a bit rude.
Othewise, the apartment is in a decent location about 35 mins by tram from the Museum Quarter and Belvedere Palace. There are plenty of places to eat around it if you're feeling too tired to head into the center.