This is one of the best places I've ever stayed at, it is full of little details that make you feel welcome and provide a great stay.
My husband and I started our honeymoon here, and it couldn't have been a more perfect place. It was super comfortable (amazing bed and shower) and convenient (a metro station is right there, but it is incredibly quiet at night); it feels like a true home.
Sveva's recommendations are spot on as well.
We didn't met her, but were welcomed by Fabio (her husband) who was very kind to us, helped us getting the rental car to a near parking place and then helped with our luggage as well.
If we ever return to Rome, we'll be staying here again for sure.