I could especially recommend this apartment. We lived there with children (3 years and 10 years) and it was very comfortable for family.
pluses:
+ very silently, you could even hear birds songs. All windows are in silent area: either inner yard or small street
+ beautiful design of interiors
+ good situation: Trevi fountain 1 min, metro station 10 minutes, villa Borgese 20 minutes.
+ Giovanni and his team helped on every step: transfer, meeting, fixing of issues (bulb has been changed in the lamp the same day), answering questions. So communications was fast and quality.
+ Very-very clean rooms, white-snowing towels, enough kitchen ware, overall well equipped
+ Elevator in the building
+ Two bathrooms
+ Big square
+ Supermarkets (coop, carrefour) are very close
Minuses:
- no :)