We had a great stay in Naples at Gianni's. The rooms were fantastic! Plenty of space in the bedroom, with more then enough storage if your staying for a little while, we spent 7 nights at Gianni's BnB and the only complaint we had was that the first room we had, the shower was unbelievably small and we found ourselves bumping into the tap and soap dispenser regularly, which was only an issue for half the stay as we moved rooms so ours could be cleaned and the other bathroom was far larger with a bigger shower. The communal kitchen area where Gianni provided breakfast food every morning was small but perfect as long as the guests wash up after themselves which wasn't always the case unfortunately.
Overall we had a great time in Naples the location was perfect for some of the best food in the city and was a great spot to plan day trips as it wasn't a long walk to the train station.