This was both our first trip to Berlin and our first time using Air BnB and it was an excellent first experience! Moritz was very available during the time leading up to our trip with helpful information about transport and ways to get to the apartment from the airport.
Moritz was out of town when we were in Berlin, but we were greeted by his charming friend Bohdana who made sure we were settled in and gave us some tips on the nearest supermarket etc.
The apartment was lovely - spotlessly clean and modern with everything we needed to be comfortable. There was a useful list of cafés and restaurants as well as emergency numbers. As the apartment was in a gated complex, we felt very safe and the neighbourhood was fine to walk through at any time. The apartment was 30 seconds from an S-Bahn station so couldn't have been better for getting around and seeing everything we wanted to see.

If I came back to Berlin I would definitely stay at Moritz's apartment again, it was a pleasure.