Francesco's apartment was perfect for us. It is convenient for both bus and metro though we mostly walked to all the main sights. The Vatican is only a mile away! And the Trevi Fountain, Pantheon, and Colosseum only a short bus ride away. The apartment itself was very clean and the kitchen had everything you need if you are having a night in. There are a number of supermarkets only a 5 minute walk away.
Fabio, Federica and Francesco are lovely people and you couldn't ask for better hosts.
When we go back to Rome we will definitely be staying here again.