This is an old shop (I think) that has been converted. Despite the huge windows at the front, you still feel nice and secure and private though, thanks to the mural on the window. This design also means that you'll have no trouble spotting the place!
Inside it is basic, but everything you need. Maybe the colours of the kitchen are a bit green, but it works for the feel of the apartment.
It is very walkable to Kreuzberg, nice and clean, the shower is very good and the wifi perfect.
If you're looking for a low cost, but nicely located, clean and well equipped Airbnb, this is the place.