The host told me the night before my stay that the room I requested is not available ... offered me a "better" one (better location, condition, ...). But the new place did not look good. It was very small, a single bed instead of a double bad, no balcony, etc.
So I cancelled my stay because the discription was not matching the reality at all. But to be fair, the host was very cooperating and helpful during the process of cancelling my stay.