Our first Berlin's visit and we found the right place, in the central of the city, at the Bus terminal from Tegel airport. The apt is just located 5mns away, in a very calm aera. Everything is as listed, everything fonctions best, hot water, heating, real beds, etc.... In a circle of 5 to 10mns walk, you have backery, supermaket, restaurants... Don't forget the backery called "Zeit für Brot" just behind the bloc, and the local German restaurant "Marcus Bräu" on the street angle...
We only stayed 3 days, but the apt is equiped for long stay too. We thank Rainer, allowed us to enter ealier and leaving later as we had a flight at 6 p.m.
We would come back to Rainer, for our next Berlin's visit.