Well, well. Norma's and Giuseppe's apartment is the best AirBnb's apartment I have ever been to (and I travel a lot because of my work!).
First, they greeted us with a lot of treats (wine, beer, chips, biscuits, and all the hotel-related amenities (towels, shampoos, etc). On my daughter's birthday, which happens during my stay last week), Norma was super kind and generous as she bought some candies and a beautiful traditional bag as gifts for my daughter, and you can imagine how thrilled she was by this unexpected gift. Needless to say that the apartment was super clean, with air-conditioners and, it's in the first floor, so you don't need to bother if you have massive luggage with you. Also, the bed mattresses were so comfortable, and this is a huge plus after an exhausting day walking around the city.
The LOCATION is just superb. You're in the middle of historic Napoli. Walking distance from the major touristic sites (Cappella San Severo, Spanish Quarters, Umberto I, San Carlo Theater, Napoli Underground Museum, and various key castles (OVO, Sant'Elmo), as well as the beautiful harbour. Moreover, you're well connected to different kinds of transportation (the fabulous Toledo metro station is 7 minutes walk, buses everywhere), and the regional train station to connect you to Pompeii, Sorento, etc). Even nicer, you're 11 minutes walking distance from Napoli's main ports where you can take the ferry to visit Capri, Procida, and Ischia (the most beautiful islands of the Mediterranean).
This place is just amazing. The hosts are super communicative. Just standing at night in the balcony, will give you the vibes of Napoli's nightlife (and don't worry, the doors and windows are sound-proof), so you will not feel any noise at all.