Anna and her husband Raffaele are incredibly accommodating and their house is amazing. We were stuck at the airport and confused yet Raffaele waited an hour to pick us up. When we finally worked out how to get to him (just a short walk straight ahead from the airport) he gave us a history lesson on Napoli, pizza and southern Italy.
Once we were at the house we were toured around and had the facilities and area explained to us in depth which was very helpful. Raffaelle also gave us a number so we could contact him whenever if we needed help or advice.
The fridge was stocked with food for breakfast, milk, juice etc. Cooking supplies and a bialetti were provided. The house has TV, WiFi, AC (amazing in the hot weather of August) and three beds (one single, two double).
Something to note is the house is a 15 minute walk from restaurants, shops and the main road, as is stated in the air bnb description. The walk is also uphill and a little steep. This is good as you're away from the noise and traffic, and the area is beautiful, residential and cool and quiet. The house is also in a secluded court yard and feels very secure and safe. You are sure to have a few interactions and conversations with the neighbors and feel welcome in Napoli.
For us the walk up was fine, but if you are staying with older family I'd hire a car. You can take a quick taxi right up to the house, but not back down so you'll always have to walk the descent to get to the main area. That being said I think the best way to get around Napoli is by foot, and food (especially pizza) and coffee is good no matter where you go.
We really enjoyed our stay at Anna's house and can't wait for our next trip to Napoli.