The apartment is just great, a duplex in an old palace. The flat itself is completely renovated and super clean. You get everything that you need + a lot of privacy. It's also very quiet, which is quite something in a city like Napoli.
Alessandro was a fantastic host, flexible and generous. He helped us in any possible way. Super kind (he ordered a pizza for us upon arrival :-) and available throughout, as he lives next door.
The apartment is some 15 min walk from Piazza Garibaldi, which is convenient if you are intending to visit sites out of town (Vesuvio, Pompeii, Ercolano), as you'll need to go to the station quite often.
One of our best experiences in AirBnB so far.