Antonella was SUCH a great host! She responds very quickly, and was helpful in every way. We had an issue in which the guests next to us were smoking, and Antonella helped put this to a stop, so we were able to enjoy our trip without smelling the smoke.
The room was comfortable, and the bathroom seems newly renovated. My only recommendation would be to bring earplugs for sleeping at night, as the building is rather old (I don't think there is a way around this in Rome), and if you a sensitive sleeper, you may be awoken by sounds from your neighbors. With earplugs, though, we both slept soundly.
The location was good for getting around, with good bus and metro connections, and lots of restaurants in the area. It was also great value for the location, so I highly recommend staying here.