The apartment was extremely clean, was pretty much what was advertised and what was expected. It was in a great spot pretty accessible, a block away from the wall memorial, which was a huge plus!
Javier was pretty much on the money, his house rules and instructions were clear and were easy to follow. We had some trouble with the toilet, but that could happen to anyone and was a slight inconvenience at best.
Overall if I ever find myself in Berlin again, I would definitely look Javier's apartment up...