The Good: The location is superb and within walking distance of everything one would wish to see in Rome. It was furnished as described and clean. It is small, but doable for 2 people. The bed is what others have mentioned - not the most comfortable for longer than 1 or 2 nights.
The Bad: You are able to hear everything during all hours of the day. When I say everything, I mean everything; the restaurant in the alley below, the people living next door (playing loud techno music, talking/fighting/arguing/throwing things, being intimate), and the sound of people going in and out in the hallway. The noises can go on until midnight or later and can be heard even with ear plugs. We will not be staying here again because of the noise issue.