Gio's place is quite unique and lovely! We were greeted by his mother, and our communication with him was fantastic. A++ host.
The apartment is a very good size and clean. It is not within walking distance from the tourist sites, but the public transit nearby (metro and trolley) is excellent. This place is great if you don't want to be treated and harassed as a tourist and feel more like a local.
One thing I do wish was improved (beyond Gio's control) is if the street lighting was improved. It can get pretty dark at night; however, the neighborhood is safe! I would recommend this place.