Casa Olivella is a beautiful flat in the charismatic neighbourhood of montesanto. Very comfortable, nicely decorated and immaculately clan, the apartment has an AC, washing machine, and it's very well equipped for cooking.
Location is great, less than one minute away from both the metro and the funicular. There are many good restaurants and sights within walking distance.
Massimo was the best host one could hope for, he gave us invaluable tips on how to best experience Naples, was always helpful and quick to answer and is a great person to be around.
I can't recommend Casa Olivella and especially Massimo enough, I definitely plan to come back.