We stayed for 3 nights in Lorenzo's apartment, and both he and the apartment were fantastic! He recommended us places to visit and where to eat, and was more than available to answer any type of query we might had.
As regards the apartment, it's location it's amazing. It's no more than a 5/15 m walk from most of Napoli interesting sights! The place is also great, spacious and clean.
The included breakfast was also really good, as the variety of things you could order was huge...
Will definetly come back if visiting Napoli again!