We had a great stay.
Alfredo was very prompt with all communications, and always helpful.
Gerardo(concierge) and his son were helpful with all issues and gave us tips on where to eat and drink.
The apartment was clean and modern throughout.
The location was great for the San Paulo stadium (about 15 min walk). Very handy for games that finish late when public transport can be difficult. The centre of Napoli is about 20mins away by regular, cheap suburban train.
It's an area where normal Neapolitans live and work, so there are lots of shops, cafe and restaurants and the prices are normal.