We had a good stay and Vincenza and Andrea have been very responsive at arrival and during our stay. The flat is cozy and comfortable, located in a very typical street and close to all the main sights in Naples.
The only low note were the loud guests in the adjacent flat that woke us up (and kept us up) one of the two nights we stayed there - I flagged it to Vincenza and she was sorry and willing to deal with the impolite guests.