Andreas is a super friendly and helpful host, always quick to come back if there are any issues. Garbatella is a nice place to stay if you want to get a feel for a more residential neighborhood, 'real' Roman life if you want to call it that, but still be within easy striking distance of all the touristy stuff by metro, foot or tram.
Do go to Eataly, which is right next door, for a gourmet Italian food experience, but also try all the small buffet and food joints in the area. They are affordable and very tasty.