Cozy little place at the centre of Navona. Very close to Vatican as well as other places of interest at this side of the river. Some really great trattorias around the streets. The Coop supermarket downstairs is very convenient and comes in handy for a quick night cap if you want to.
Overall Costanza's place is highly recommended if you want to see around some of the most famous attractions of Rome.
Unfortunately we could not meet Costanza but her lovely mother welcomed us and made sure our stay was comfortable.