I've always used Air BnB but this never happened to me.
This room was not like in the announcement and most of the services were not available: the WIFI didn't work and the roller shutter was broken so the first night we had to sleep with the light outside and when we told the hosts they could just pull it all the way down but not repaired it, so the next mornings we couldn't open them and we stayed all the days without opening them.
Also there was a dog in the apartment, even if is explicitly said in the announcement that animals are not allowed (when I read that I expected to not find any animals, not just that I couldn't bring mine).
I said all this things to the host and then I requested some of the money I spend back (cause I paid for a full services and obviously I didn't received it at all), but when I did the host was extremely rude and denied it to me.
NOT AT ALL RECCOMENDED!