My friend Sophie and I stayed 5 nights in this apartment and wouldn't have had it any other way! The apartment is in a perfect location, a minute walk from the metro which was really convenient our entire stay, all of the roommates were extremely friendly & willing to share their knowledge of Berlin, and our room/access to amenities was just what we needed. Highly recommend :)
I would suggest bringing your own towels, though. There are limited towels in the bathroom.