Stayed at Roberta's apartment for three nights. It is on a great street with countless restaurants, bars, gelato shops and shopping nearby.
It's about 5 minutes from Plaza Navona, 10 to the Vatican. Maybe 15 to the Pantheon and 20-25 to the colosseum. We walked everywhere with no issues.
Roberta is a great host, she scheduled the driver to and from the airport, met us at the apartment and provided lots of info. Would definitely recommend to anyone.