This was our first time using AirBnB, and we picked Jacopo's place because of the good reviews. We weren't disappointed, the place is exactly as described, very clean and really close to the ancient city (we walked from the Colosseum in less than 10 minutes), and also a shortish walk to some nice places to eat as well as the nightlife. I struggle to sleep in most hotels but had no problems here, it was very quiet indeed!
Jacopo was a great host too, his communication was great from when we first booked and throughout the time we were there. He recommended some places to eat (mornings and evenings), and those that we went to were all great. We emailed him shortly after he'd left us after arrival asking for some help with something, and within 20 minutes he'd responded and asked someone to drop in to help. He also booked us a taxi for when we left, and sure enough it was there right on time!
Very highly recommended!