We loved our stay at Anna's place. Very clean, spacious, great communication, we loved the little snacks, fruits and water that she provided, as well as all the recommendations for pasticceria, pizza and other restaurants. There was something broken by the previous guest, but she was very quick to fix it, which is really appreciated.
The appartment is located in the heart of the Quartieri Spagnoli, so be ready to melt into the neighborhood; it's as quiet as Napoli can be :-) It's a 5min walk to Via Toledo, which is really convenient.