Stayed just one night so can’t comment on the location to Napoli attractions, but it was relatively easy to access from the airport. I would advise against driving in Napoli if you can avoid it. Parking is very difficult anywhere in town, but eventually we found nearby free parking, and there are paid garages if you prefer. Don’t try and take a car to the exact address…you will get stuck in the narrow streets.
Apartment is as pictured. There are quite a few stairs so prepare yourself for that. Bed was very comfortable, and kitchen was small but well equipped. Good wifi.