If you are planning a trip to Naples and you don't mind to stay in a RV type room and sleep on a futon, we highly recommend Flavio's place! Location is great, right next to Galleria Umberto.
To get to the room be ready to climb little stairs... is like going to a tree houses : )
The Tarrasa has a nice view, we where lucky the night we got there wasn't raining so we where able to use the hot tub.
Flavio was really helpful and answered all our questions fast.