Javier's flat is the best place i've stayed so far in this trip. Everything is really clean, the beds are extremely comfortable, there is a lot of cooking stuff, the bathroom is beautiful. And Javier was an awesome host, always available, he even helped me when i lost my cellphone to comunicate with the guy that found it. I would recommend this place to everyone, is really clean, quiet y perfectly located to go everywhere, and if i go to Berlin again i will stay there for sure.