We only stayed one night in Celesta's apt. We drove in from Pompeii in the late afternoon and tried to follow a map. Ha! But is was August and the streetmaze of Napoli was not so crowded that we could not find our way.
The final blocks were on a one way road crowded with street vendors and scooters, and people originating from all corners of the globe. We found the arch into the building next to a streetstand for clothing. Someone moving the scooter blocking the entrance, and we entered the impressive courtyard where we left our car. There is a caretaker and we felt that our car and persons were generally safe. Up the majestic staircase where we were met by Celesta's mother (Celesta was out of town but had baked us a delicious bread).
The apt itself is half-height of the regular apts (must be servants quarters), with half timbered ceilings at about 5'9" so be careful if you are tall. It was a very hot night and there is no air conditioning. The main room is very spacious with a nice separate kitchen and completely functional bathroom. Clean. Celesta's art is on the walls and it is impressive. We wish that she could have provided a pricelist!
The neighborhood partly reflects, as my son said, people who had run out of shits to give- we saw dead rats on the sidewalk that had been there for a while. This neighborhood is full of working class Napolitanos including many recent immigrants, and is very lively.
The neighboring buildings are beautiful and old but generally run down. The apt is a couple blocks from one of the most amazing collection of Greco-Roman art in the world. I doubt that we saw another tourist on the street during our wanderings.
Celesta also rents a room in the main apt and it has the high ceilings. The internet did not work in our apt but the person renting the room told us that it worked well for him.
In sum, I would say that this is a great place to stay but it requires an open and flexible mind. I am very glad that our teenage children got to experience this side of life, a little (we are well-traveled but live in suburban San Diego). We give 4 stars because of the lack of air conditioning and internet, and the low ceilings, not for the neighborhood.