Frantz's flat was very dirty, there was accumulated dust on the shelves and in the bathroom. The bathroom and common areas smelled really bad.
In order to get to the bedroom you need to pass by the the common bathroom and this is a problem if someone is taking a shower.
There was a very aggressive dog that attacked me every time I I was going to the toilet (which is separate from the bathroom) or leaving the house. Despite telling Frantz, he didn't do anything about it (he could have blocked him from getting to the entrance and my room) and the dog was always trying to bite me.
Finally Frantz entered into my room several times when I wasn't there and turned off the only small lamp, turned off the heater and opened the curtains. He never asked me if I didn't mind him entering.