Christian and Veronica were great hosts. Good communication and very helpful. The apartment is large and clean with a cute backyard patio. Heated floors were amazing..
M10 Tram was our main source of transit in and out of the area (the U-Bahn stop nearby currently does not connect through to Alexanderplatz). We quite enjoyed doing our touristy and nightlife things away from our lodgings and then retreating to a nice quiet apartment with a comfortable bed. Recommended.
I must note that if you are sensitive to foot-fall noise above you, this apartment might not be ideal.