I stayed at Moritz's apartment for almost a week while on a business trip. It was clean, comfortable, quiet and spacious.
It's also very conveniently located with S-bahn station and tram stop around the corner, organic supermarket in same building block, and in a neighbourhood full of nice little cafés.
Communication with Moritz and his wife was smooth and reactive ; and I've appreciated that they accommodated my non standard checkin and checkout time.
I totally recommend this place.