Vincenzo’s flat is everything you need. It’s clean and the kitchen is well equipped. Vincenzo does not live at the flat but is extremely helpful via Whatsapp. I could contact him anytime I needed. The room has no window but it has a very good ventilation system including AC and heating. Also very quite flat  and safe area and near the Universita Metro.
Really the best air bnb you could find next to the Historical Centre. 100 % recommended.
Grazie Vincenzo I will certainly come to yours again if I come back to Naples . Ciao