The apartment is well equipped and in a very handy location. It was very easy to get to from Schönefeld airport using the S-Bahn, and there is a tram stop right outside with easy access to Alexander Platz. It is also situated close to lots of restaurants, bars and supermarkets.
The heating worked well (as we travelled in late November), as did the hot water.
Our host was very helpful and responsive to our messages, although we didn’t meet him in person it was clear how to check in/check out etc. I would definitely stay here again.