I can't recommend this place highly enough. The apartment is beautiful and in a lovely, quiet, authentic area of northern Rome. It's a 5 minute walk to a new metro station on the end of the B line. It's cleaner and quieter than the main A line.
Maripaola is a great host. She did everything to provide us with a smooth arrival and was incredibly helpful with any questions we had.
The only drawback when I was there was that the air conditioning wasn't working. As a result, the apartment was very warm, even during the night which made sleeping difficult.
Aside from that, I had a great stay here.