Nunzia's place is in the center of Naples. We went there to get the real dynamic Naples experience and great food, and it was definitely in the right location. There are many great food places very close to the house and we got to have the very delicious Naples pizza thanks to Nunzia's tips. The apartment is clean and spacious (two of us). Nunzia is very nice and helpful with our short stay, flexible with our check-out time and provided tips of places to eat, etc. I would definitely recommend her place to people exploring Naples.
Only note to others is that the taxi driver we had from the train station didn't drive into the area due to many pedestrian areas and narrow streets in general (cars are allowed but he was not sure about navigating). So we ended up walking about 10 minutes from where he dropped us off. The experience of staying in the neighborhood is totally worth the walk, but just wanted to point out to others to communicate with the driver in advance and be on the same page.