Marco was readily available and waited for us on arrival. He helped us with the luggage and also walked with us to a nearby restaurant despite the late hour.
The apartment was as described and shown in the pictures, very tidy and new.
Regarding the neighborhood it appeared initially a bit dodgy, but once used to the Naples environment it turned out to be very cosy. There are artist and handicraft shops in the same street that decorated streetlights and balconies. Very characteristic and worth a visit.