It was a perfect stay. Flat is in a good location, outside of the ZTL zone (so no extra cost when parking the car in front of the building). I haven't met Flavio, but his father and the neighbour was always available to help.
The only thing we couldn't manage at first glance was the air conditioning, which was turned on by the neighbor, so that wasn't a big deal/issue.
Otherwise: everything was as expected: perfect.