Nice place in a good area, next to some restaurants and morning coffee and close to public transports/at walking distance from a lot of nice places to go. Takes a good condition to reach the 5th floor but once there it is worth it. A spacious room with a comfortable bed & couch, bathroom with shower/bath in a quiet street. As communicated a few days before arrival, Christian was not present in the apartment at my arrival and arranged with my daughter (who lives in Berlin) for the keys. she experienced the encounter as a bit toxic and Christian asked for her phone number, which she experienced as a bit inappropriate. The apartment was not really clean. I usually don't pay so much attention but the bathtub and water taps were gross and there was a lot of dust behind the bed and dirt on the windowsill.
So overall I can't say I was a 100% happy.