We went to Napoli last minute and found this great new airbnb. It's very spacious and clean with well working AC and a good sized kitchen. Beds comfy too, both mezzanine one and the small one downstairs.
Location wise it's very close to everything which we really liked. The apartment is in a small gated yard which made us feel safe when coming home late.
Lastly for tips: Coming here by car is not convenient since you might get stuck in the small streets of Napoli. Do some research beforehand on best places to park and how to avoid ZTL zones.