The reply from the provider is very fast. And he has a strong sense of responsibility. Basically my stay here was great only except the WiFi is a bit slow, around 1MB/s.
Apart from that everything is good.
Also please beware of the possibility for Airbnb mobile app skipping essential information such as there is shared areas and another renter if not renting the whole apartment. This caused a little trouble for me, but the reaction from the provider is satisfying and things worked out well.