The location is excellent, nearby Nollendorfplatz U-Bahn which is very central, in the heart of Schöneberg which is a gay heaven and there are plenty of bars and restaurants around.
The studio is clean, nice and spacious. The only issue I had is that the bathroom is not completely separated from the room so if your partner is using the bathroom you'd be able to hear it. Rather than that Alex is a great host and the apartment is a great value for money.