I had a really nice 3 night stay at Ludovica's apartment, which is located on an upper floor in an old building close to metro stations Museo and Piazza Cavour. I walked in a lot of districts in Napoli and I can say that this area is really good. Also, you can reach touristic locations in 10 min of walking or so. Ludovica was very welcome and helpful, the communication was smooth and I've got several useful recommendations from her. The apartment itself was as described, nice and comfortable, you'll have everything you need including air conditioner, wasching machine and well equipped kitchen. It can be important for some people that the building doesn't have an elevator and you have to go up to the top floor (4 or 5 levels) which was not a problem for me.