We had an excellent week-long stay at Julie and Alessandro’s apartment. It was larger than we expected, which was a great surprise, and we appreciated the amenities provided (washing machine, nespresso, hair dryer). They were particularly accommodating of our baby who joined us for the trip, and provided a travel crib we requested as well as a high chair, and bottle warmer. They also responded within 5 minutes when we had a question during our stay.
We were able to walk to many restaurants and tourist sites from the apartment, including the Vatican and the center of Trastevere and Campo de Fiori. It was fairly easy to take cabs for longer trips (~10 euros for the coliseum and other destinations).
We would certainly recommend the apartment to anyone wanting to be close to the action of Rome but on a very quiet and charming street.