Carmen was very helpful. She responded quickly to every email before we arrived and was flexible about both check-in and check-out times. We did not have much interaction with her in person because she left for a trip the day after we arrived. She also had a few maps and other useful things in the room.
The room itself was fine, and probably a good deal for Rome in August, but not anything special. It was convenient for our flights in and out of Rome, but we never really wanted to hang out in the neighborhood of the building itself. That said, it was not a very long walk (and was an extremely short subway ride) to places we enjoyed more. My main complaint was that it was very hot in the room - even with the fan going. But again, that's sort of Rome in August...
The building sometimes seemed a little dirty but the room was clean and had fresh linens and towels.