Pros: best location ever! Close to metro, close to museums, plazas, great restaurants, easy walk to port where you can go to Capri. Also, Rodolfo was so helpful and friendly and responsive. He and his wife met us at the apartment to show us around and greeted us with a beautiful bottle of wine and authentic Napoli biscuits. Definitely above and beyond! The apartment is just as described, everything was wonderful and the wifi, shower, kitchen, and washing machine worked great.
The only con: it was very hot. Despite two fans it was so very hot! This was an issue during a heat wave in July but would not be a problem any other time as the air flow through the apartment is good. It just never cooled off at night and was hotter inside than outside at night and in the morning. Overall though, what a wonderful stay in Napoli!