Gio and Rob were consumate hosts! Their apartment is located in a quiet neighborhood outside the historical center but 15 minutes from anywhere you want to go by tram. There's also a number of restaurants and bars nearby that are much, much cheaper than what you find in the center.
Giovanna is a polyglot professional tour guide, so no matter what your lingo or specific needs for your Rome experience she can give you all the information you need.
Stay with Gio and Rob, you'll feel right at home.