Reiner seems to be a nice person. He always answered my messages and even one phone call. We could not communicate easily as he does not speak English (nor French or Spanish). I knew this before booking so it was no problem at all. The room was pretty cosy and the fridge and kitchen were clean. The only "problem" was the other people staying there : they left the bathroom very dirty. Apart from that, the metro station is close and the neighbourhood very quiet and nice. Thank you Reiner.