Our stay at Assunta's place was perfect. The place is fantastic, very clean and comfortable. It has two bathrooms and air conditioning and TV in each room and in the living room (we were five people). It's a great place for a short visit to Napoli and the surroundings or for a long stay, it has everything that you could possibly need. The neighborhood is not very fancy but the location for us was nevertheless great, since it's an easy walk to Termini station (about 5 min) where you can reach two subway lines as well as trains that can take you to Sorrento, Pompei, etc.
Assunta and her husband were super nice and welcoming and made our stay fantastic. I definitely recommend this place and would stay again if I visit Napoli.