We stayed at Clizia's place for five nights during our recent holidays in Rome, and it was fantastic.
She made everything for our smooth arrival, met us, showed us around and was extremely helpful during all our stay. Her apartment is awesome, bright and funny, and the room we stayed in was great. There's also a nice view from the windows. It's been a real pleasure living there.
Location is good, short bus ride from the historical center (or 20-25 minutes walk), and there's a train station nearby perfect for getting to/from Fiumicino Airport.
Would definitely recommend staying here, it's a nice place and a great host!