We had a very pleasant stay at Paolo and Danielle's apartment. The location is perfect for walking to all the sights in Rome. We didn't have to pay for any public transport or taxis to get to any of our destinations.
Despite being in a lively part of town, our sleep was not disturbed and we had loads of great restaurants, bars and gelateria on our doorstep.
At check-in, Danielle was delayed. He didn't contact us and we were left waiting for almost an hour. Tried calling his phone and emailing through Air B&B, but there was no response. This was frustrating, but could be easily resolved with better communication. Danielle explained that he had 4 other check in's that day. A phone call would have allowed us to get lunch and wait in one of the nearby restaurants.
There was also a smell of damp in the apartment, especially in the bathroom. I'm not sure that anything can be done about this however, due to the age of the building.
I would recommend staying here.