Great location and communication with host.
Easy access to vatican and public transportation. We purchased the Roma pass and there is a bus and subway stop short walking distance from the apartment. There are several restaurants on the street and one night we ordered take out for dinner when we were exhausted from a full day of tourism.
The apartment is beautiful and nicely decorated, very clean and comfortable.
The only improvement we suggest is to equip the kitchen with a pan and some basics such as paper towels, condiments and species.