Amazing location! Few meters from the Fontani de Trevi. Lots of small shops and restaurants. We were able to walk to all main attractions from this apartment. It can be loud at night but blame the people having too much fun!
The apartment is very cool... charming. Lots of beautiful wall art. The bathrooms are Italian small. If we haven't been to Europe/Italy you might find it too small at first but you spend very little time in the apartment to worry about that. We had one issue with the water pressure and Alena who was out of the country had it fixed by the time we were back from our visit to the vatican. She responds very quickly - amazing hostess.
Also, she sent us a note as soon as the apartment was ready.. maybe and hour or so before the official check-in time. She wasn't able to accommodate late check out because of incoming guest but there's a luggage storage place (7euros/day/piece) around the corner.