First of all, the flat was nice with good views although many unfinished parts such as wires extruding the walls and a bath incongruously at the end of the bedroom. Location wise the flat is 25 minutes to town walking or transport and 10 minute walk to the Vatican.
The experience with the host was negative. First time this has happened after many airbnb stays. She falsely accused us of having someone stay over and tried to charge us extra. She sent lengthy accusative messages. And even before we arrived she was impatient for email responses to photos she sent that we hadn't asked for. Unnecessary stress on what was a fine trip.