Don't be fooled by the exterior.
If you are not as irredeemably stupid as we were, finding the apartment would be simplicity itself. In keeping with the rest of the area the one-way window is smeared with graffiti and could lead you to fear the worst. Once inside (Trust me, the lock takes a little getting used to) it is exactly as described, a superbly equipped apartment with everything you could possibly need, scrupulously clean and ready, even a bottle of beer in the fridge that was gratefully received - we replaced it with two when we left. Enjoy.
Everything works, the wi-fi is first rate.
Locally the big selling point is that the neighbourhood can be described as vibrant, as long as you are OK with spray painting. There are numerous bars and restaurants locally and the whole area buzzes. Despite this we were never disturbed by excessive noise, even though you are on street level. Two U-Bahn stations close at hand means access to the city is simplicity itself.
Fully recommend!