I really enjoyed staying at Stephan's place. He was very helpful with the check-in and was the whole time available to solve any questions we had.
The apartment is exactly what I expect.
Some negative points were mentioned already in the comments of previous guests (like the small toilet, a bit loud noise of neibours, etc). So I was aware of all these when I booked the apartment.
The apartment is also a bit dark during winter and the heating wasn't working properly in the bedroom.
Stephan had a small electric heating, which helped us in that sense.
I would recommend staying at Stephan's place despite some negative points. The positive points ovecome the negative ones in my opinion.