My wife and I had a very nice stay. The apartment was very well located in the Monti neighborhood, walking distance to the train station and the Colosseum area as well as some nice restaurants. It was a very cute place - clean and nicely decorated. Also, Silvia was a great hostess - meeting us when we arrived late on Friday night and allowing us to stay late on our departure date as we weren't flying out until 8:30 pm. This allowed us to fully enjoy our last day in Rome.
My only negative comment about the place is that it may be better suited for one person than two. The apartment has a very small electric water heater. It had to be turned on 30 minutes prior to showering and then only generated enough hot water for one shower. It was hard for two people to get up and out in a hurry.