The place is everything you need for your stay in Napoli. Enrico lives upstairs in the same building so they are quite flexible with check-in. Plus communication with them was very fluent and quick.
The apartment is located just 7 min walk from the airport bus station, few meters from a subway station (not that you need metro to discover Napoli - we didn't use it).
The bed is very comfortable and the area is quite quiet, which makes sleeping easier.