A nice option for a stay in Naples. The apartment is an underground-type (below street level). During the weekends, lots of loud motor vehicles pass near the windows during the night, which can be heard very very loudly and can interrupt sleep, even with the windows closed.
However, it is a decent place to stay. Expect to get around via walking a lot. There is a metro station within 3 minutes walking distance that brings you closer to the center.
The host himself was incredibly responsive and helped us with everything we needed!