We had a very nice time in his apartment! Markus was very effective in his communication and we didn't had any problems to get the key. The apartment is quiet and located really well as it has U and S bahn around the corner around 10min walk, and it is also the station for the ring s bahn which makes it perfect to come back home from any direction ( We just had to take one line since Schönefeld airport). The next Supermarket is lidl, just over the street ( 300m ) wich was great for us.
We recommend this place to anyone!