Andrea and Luigi's place was wonderful. It is about a block away from the exciting Via Tribunali, which makes it super easy to get to a ton of exciting locations in Naples, but far enough away that you can get a little respite from the noise and crowds. The location in the city just really can't be beat.
The apartment itself was great as well. There is a direct access from the street so you don't have to navigate your way through a building, then a short flight of stairs up, and you're there. It looks quite a bit like a grotto in there, as you can see from the pictures. It's basically one large room with a kitchen, kitchen table, and couch/lounge area, a bathroom, and then a separate bedroom. The couch also converts to a bed pretty easily and they even have a little folding wall that you can use to make the couch area more private if you're using it as a bedroom. The bedroom has a small balcony, which was nice. The bathoom had a good strong shower with plenty of hot water. I used the air conditioning just to get some air moving in the apartment, and it worked just great.
Both Andrea and Luigi were wonderful, very easy to communicate with, and they met me at the apartment when I came in. A very nice perk of this place is that they run a cafe nearby (3-5 min walk) where you can get breakfast every morning. Each morning I would go in and whomever was behind the counter I would just say I'm at Casa Diaz and they would smile and ask how things were going and then set me up with breakfast.
Overall I very highly recommend staying here. Thanks guys!