I spent a very nice time at Marina and Nico's place. My arrival time (5am) and departure 11pm) were terrible but Nico was very flexible and happy to assist.
The room was nice, very clean and quiet. Big comfortable bed. Just what I needed.
On top of it the location is excellent. 5min walk from the Vatican and there is a bus stop (a bus every 5 min) next to the gate taking you to the main spots in the city, including the train station.
I really enjoyed my stay and I would recommend this place to anyone visiting Rome.