Fabio is the absolute best. If I could give an extra star I would. To put my review in perspective, I previously studied abroad in Rome for 5 months and know it better than the average tourist. Fabio still sat down with me and my wife, offering his expertise and managed to show me some new hidden gems, get us a reservation for dinner at a fantastic place nearby, and answer any other questions we might have. His casa is massive, immaculate, and extremely well thought out for the traveler as if a professional interior design crew had put it together. As for location, it is very very close to a less crowded but centrally located Metro stop which makes accessing the rest of the city a breeze for anyone who bothers to learn the public transit system.
I cannot recommend staying with Fabio highly enough.
Grazie mille per i recordi Fabio! Ciao!