We had an amazing time at Ros&Sal's place.
The accomodation looks even better in reality, it's very cozy and has a great view.
It's a 5min walk from Meterdei metro station and 10 min away from Piazza Cavour. It's 200 meters away from Starita, one of the best pizzeria in Naples so getting around is very easy.
Ros and Sal are some of the most thoughtful hosts I met. They have us detailed instructions of how to get around Naples and they were very kind to take us to the airport in our last day.
The apartament is decorated in a very artistic manner so I couldn't recommend this place more for an autentic napoletan experience.