We were a group of six: two couples (in our early 30s) and our parents (60s). We rented the entire apartment for five nights, and were all extremely satisfied.
Guiliano's apartment is beautiful. Unbelievably high ceilings (twenty feet!), large bedrooms (with private bathrooms in each), a fully stocked kitchen, balconies (one into a quiet courtyard, the other over an exciting street), and all tastefully decorated with beautiful photography and art. The bedrooms were spacious, with beds that were quite firm but comfortable.
The location was ideal. Very close to Spaccanapoli (pedestrian street which cuts through most of Old Naples), close (s apartment. Excellent value and location, and Giuliano was very kind and helpful.
100% recommended.