Naples was not my favorite part of my recent trip to Italy. I was concerned about the supposed rampant crime and was more alarmed by the traffic and graffiti. However, Napoli Suites is a nice little gem in the middle of all of this. Located through a courtyard behind several gates, the suites are all quite lovely and clean. They contain bits of charm with basic amenities. We chose the Casanova Suite because of its exclusive access to the terrace garden. It was nice to eat breakfast there or spend the afternoon with a glass of wine and a book.
A couple of places for improvement - as other commenters have said, the wifi can only be accessed from the bottom of the stairwell. The apartment is dark except if you are sleeping in the living room on the pull-out couch. Unfortunately there is a glass door to the terrace and the light is not kept out. Also, agree with other commenters - we had to ask for a second roll of toilet paper.
One thing that is good about this place is that they allowed us to pay the balance with a credit card. Other apartments we rented during this trip required the balance to be paid in cash.