First of all, Massimo is one of the best hosts I've encountered when staying Airbnb accommodation. He communicates rapidly and thoroughly. He gave me an excellent self-made guide to Naples, which I used every day throughout my one-month stay.
The apartment is scrupulously clean and Massimo changed the linens and towels every week, and did essential cleaning.
The description of the apartment is accurate and it is well equipped, with a comfortable bed, good bathroom, kitchen appliances etc.
It is located in the Montesanto neighbourhood, within a minute of the railway station to central Naples and in the other direction to Campi Flegrei. Another minute will take you to the funicular railway to Vomero and the trains out along the shore of the Bay of Naples to Pozzuoli, Baia, and Torregaverta. It takes 20 minutes to walk to the historic district of the city. There is a nearby supermarket and many shops, bars, and restaurants in the area.
It can be noisy at night -- light sleepers be warned.