While doing an internship in Naples for one month I stayed at this place near Capodimonte. I was welcomed at the BnB by Franca and Anna, who were very nice and uncomplicated hosts. We had a lot of fun together, although I don't speak italian and they don't speak english, but it worked quite well. Additionally, if you stay here, you get to experience a bit of the italian lifestyle and especially the cooking. Franca is a very good cook and I'm sure she will show you some napolian-style dishes you can enjoy afterwards. It is a very quite place and even though, the location is a bit far from the city center it is easily reachable with the bus (traveling with the bus in Naples is very uncertain, but I recommend the Gira Napoli App, which works not perfectly, but best). Since, Capodimonte is above the main city, after a short walk, you'll get a beautiful view of the city. Nearby, supermarkets can be found and of course, delicious pizzas too (my recommendation would be Pizzeria Ristorante Al Terrazzo - Dal 1953).
Concludingly, regarding the BnB, I want to say, that everything I needed was available and, that I had a wonderful month. Napoli is a great city and has a lot of things to explore.