We liked the place, stay was fine. The bathroom has a nice shower. The host was flexible in meeting with us with the keys. Arranging the check out was fine too.
Public transport is nearby.
Very nearby is a place called Lentz, that offers great food, and several breakfast options. You should eat there at least once. There's also a supermarket very close by.
Less good: We were woken up three times in the same (very early) morning by someone that decided it was time to move all the trash containers just outside our room, with as much noise he could (not the host). There was no wifi, and network (3G or 4G) very poorly available, with either network.
When instructing your navigation, mind that there are two streets in Berlin with the same name, on opposite sides of town. Make sure you enter the address number too (with the c).