We do recommend the apartment. It is located in walking distance to main tourist points. Area is quite safe (taking in account that it is Naples ;)). Apartment was clean, spacious and light. We stay there in 6 people, however is would be ok also for 8 people. Area is noisy so even with closed windows you will hear laud people and scooters on the street, it is quite only at 4 am ;).
Apartment is on 4 floor (there is no elevator), so it won’t be ok for older people, my parent (ca 65 yo) got problems to get upstairs.
Plus for air condition and fully equipped kitchen that we were able to prepare supper and sangria.
Adriano and Connie was very hospitable, answer quickly for message, organised well transfer from apartment to the airport. Connie gave us nice tips for good restaurants and places worth to visit, warn us about not safe area that we should avoid during our stay.