I cannot recommend Marcus' apartment enough for stays in Berlin! The room was very spacious, the bathroom and kitchen spotless with all of the amenities we needed, the bed and pillows very comfortable, and the room temperature was just right keeping us cozy even though it was snowing outside. The room was quiet, private, with entry through a lovely, art-decorated courtyard. All of the doors easily unlocked with our keys (a problem we had at another Airbnb). The apartment is located in Mitte, a fun and lively neighborhood with great restaurants, attractive galleries and shops, delicious bakeries and a market all within easy walking distance. Many sites were within a 15 to 30 minute walk and it was an easy walk to the S Bahn, U Bahn and the Friedrichstraße train station. The host and his wife were very friendly and responsive. If I ever am fortunate enough to return to Berlin, I would definitely stay here again!