My girlfriend and I had a really great stay here for 4 nights. The flat was surprisingly quiet although the street is really near to Colosseum and Trevi fountain. The bed was super comfortable and air conditioning allowed for a comfortable temperature at all times.
The host, Aldo, also left us some food and beverages in the fridge, which was very kind. Aldo was always available during our stay and helped with all our needs.
We definitely recommend this apartment and hope to come back again! =)