I stayed at Sergio's place for about a month. Except for a few days that he was away, we were both at the apartment, and mostly in our own rooms. He is quiet and respects your privacy. The room is decently sized, and so is the kitchen.
There is good and fast connection with S-Bahn, and bus, and you will find everything you need in the neighborhood. The river and forest are also nearby.
All in all, I'm very satisfied with my stay.