A total gem. The location is walking distance to all attractions, with the only taxis needed being to and from the airport. Close enough to all the action, but far enough away to allow for some down time and relaxation away from the crowds. Pierluigi coordinated a pickup to the airport for us, which saved the hassle of booking a taxi.
The apartment is a great size for two people and it has all the amenities for a comfortable trip. The washing machine was an added bonus mid-way through our two week trip around Europe.
As other reviews mentioned, the staircase is steep so make sure you are ok with stairs and bring smaller luggage. My husband and I worked off some of our pasta with these steps :)
Overall a fantastic apartment and would definitely recommend, and stay again if we head back to Rome!