Maurizio's flat is ideally located up in the quartieri spagnoli, near Chiaia. If the climb scares you, you can easily grab the funicular that will take you two minutes away from the flat. Also, it is located in a private interior courtyard, so it is preserved from the quartieri's business.
The flat is spacious, tidy, and well equipped : all you need for a stay of a short or medium duration in Napoli.