My two friends and I thought our four-nights-stay was not great, but still okay. X was friendly. The beds were comfortable, we had access to Netflix on the tv and there was a big grocery store across the street. Unfortunately, the apartment was kind of dirty. For exempel: stains on the walls, there was dust in the corners of our room and fruit flies everywhere in the kitchen (probably because he doesn’t take out the trash). What bothered us the most though was that he and his girlfriend woke us up every morning by primarily laughing loudly in the room next to us and in the hallway. They had no respect of our sleep. On a Saturday they started talking and laughing at seven (7!) and thereby also waking the three of us up... Furthermore they occupied the bathroom for a long time each morning, and once they left the appartment without replacing the empty toilet paper roll and we couldn’t find a new one. Also the apartment was located outside the city so you have to take the U-bahn for approximately 20 minutes to get to Berlin’s center.