Christoph was a great host and could not have been more accommodating for us. The apartment itself is great, containing everything that you could need for your entire stay. The apartment is cosy and situated nearby various transportation links as well as supermarkets and bars/cafes. Communication was faultless. On our final day, Christoph stored our luggage and allowed free rental of the bikes until we had to leave for the airport. If I'm ever back in Berlin, I would be sure to stay here again!