There was no good communication with the host. At first he did not confirm the check in time, which led to the situation that a friend of mine had to cancel her lunch at a restaurant in order to pick up the keys from a friend of the host who would otherwise leave the apartment within 40 minutes without suggesting other possible arrangement to get the keys.
The host did not inform us about the issues with water heater, so my friend had to take a very icy shower as the warm water was not coming.
The apartment is located close to the most important tourist attractions. It is quite well equipped. If there were no communication issues with the host, we could consider it as a quite nice stay.