My stay here with my partner was fine, though we did come across some things that concerned us. First, our room in the apartment had a lock that seemed to be exactly like the bathroom lock and did not feel at all secure (very easy to pick it). This wouldn't have been much of a problem, however we never really knew who was in the apartment. The owner had friends over constantly and we were never informed this would be happening or when/who would be there. Also, we were told to have quiet hours from 10pm-10am, but on the first night when I fell asleep at 9:30pm, my partner said the owner and his guests were making noise until around midnight at least. Finally, the owner asked us why were even in Berlin because all we were doing was sleeping, and when I tried to explain that we had been out sightseeing and were resting on the first day from a long day of travel, he cut me off and closed the door to the kitchen. I don't believe it was his business what we were doing visiting Berlin anyway.