Great appartement, very clean and well prepared. The neighborhood is not the best considering the price, and we didn't feel much safe as there was a back door accessable from the outside without a key.
I'm sure Philipp is a very nice guy, but we couldn't reach him during our stay (neither before not after). The check in process was simple but the details sent were buried within 100s of lines (local guide), so it took us few hours to figure out how to enter the appartement