We stayed with Gigi for three nights and fell in love with his apartment. It is a beautifully designed space with a very comfortable bed and was very well equipped for our stay: there were lots of kitchen appliances, complimentary toiletries, full sets of towels etc. Also despite the air conditioning unit not facing the bed, there is also a fan so the sleeping area can be very cool and ventilated throughout the night.
The apartment is also walking distance from many of the sights, and the metro stop is just down the street so it's easy to connect to the main train station.
Gigi himself was a great host offering recommendations on cheap ways to get to Naples from Florence and accompanying us to get a taxi to the port on our departure. He was attentive and easy to contact before and during the stay, could not recommend this apartment more for a trip to Naples.