Our stay in Antonio's flat was super and we would stay there again. The location is very good and the flat is on the 4th floor of a building located about 100 m up a side alley from a main thoroughfare, so it is close to the "action" of the city but very quiet at night. Everything is within walking distance, including restaurants, groceries, metro, waterfront/ferries, and old town is very close, etc. The apartment is lovely and the description in the listing is accurate. Antonio himself is very friendly and showed great communications before and after booking and he allowed us to check in a little early per our request. Be sure to ask Antonio about his favorite pizza joint and walk there to get Take out (Antica Pizzeria Prigiobba)...don't eat in: it is an easy walk back to the flat and your pizza will still be steaming hot.
While the AC is in place in the living area and main bedroom the smaller room can get hot though Antonio lent us a fan and that helped our kids sleep a bit better. It was hot in Naples during our stay.