Sorry to say that but I would not book this place again.
The front door is cleary broken and opening with the provided code was not possible. I was only able to enter as another guest arrived (by chance) and used his key. Also the door to the apartment is very thin as well as the window to the street. One could hear everything from the apartment next by and the noise of the cars on the street directly in front of the place. The apartment was not completely clean (still dust & dirt on the ground) and in the shower the water was not flowing away causing a flooding of nearly the whole bathroom even when being extremely cautious...
Consider that the location is a bit outside of the city centre (which I knew). Personally I was quite impressed by the pictures of the apartment but it didn't quite match with reality as everything was a bit run down.