We had a great stay in the house from Vico Sant Eframo Vecchio 39 street. Quite central, very clean, and kind hosts that waited for us longer than they were expecting since our flight was delayed. They welcomed us with a city map and a lot of local tip treasures. We tested some of their recommendations and were delighted. The house is near a small plaza watched by a medieval basilica and the Central Station is about 20 minutes walking. Definitely recommend to stay there but watch out for the noisy scooters and for the nervous Fiats which are all over Napoli!