I stayed in this apartment with my partner and mother on a family trip, and it was lovely. It's right next to a train station, close to tons of incredible food, and was a great place to crash at the end of the day. Everything we needed was there: tons of local tips, some breakfast pastries (and Claudia's lovely sister brought us even more halfway through our stay), and even some iced tea in the fridge waiting for us when we arrived. They were also very kind when we arrived a bit early, and helped us with a taxi to the airport when we left. Overall, a great place to stay in Napoli that makes it easy to get around.
Make sure you note the height of the ceilings in the listing before booking if you're tall! We completely missed it before we booked.