First, the positive thing about the flat is the quiet and calm environment.
Honestly, I was disappointed during our stay. When we entered into the flat, we experienced a damp and humid smell. The bedroom was a hole, and the furnitures were shabby. The flat needs a renewal. There was not enough liquid soap, and we had to request extra toilet papers in the beginning. (2 rolls were not enough for 3 people for 6 days) So if I stay in Berlin once again, I will choose another flat.