I stayed at Gianluca's place three nights. Although I communicated with Gianluca (which was a bit slow), I never met her. Some other guy called Mattias deals with the guesthouse. He is a nice guy. Communication was not quick enough at first.
The room looked bigger in the pictures, but it is a guesthouse and you get a room different than the one in the pictures. So it was way smaller than it looked. And you never have sunshine, we couldn't even understand if it was sunny or not. It is quite dark in there.
It is 15 min walk to Termini. But it is not close enough to the touristic places, and after a day you walked a lot to visit places it is a torture to walk there. The closest underground is 10 min walk. Although the neighborhood is nice (lots of ministries, governmental buildings, etc) there is no life at nights. So it might be a little bit scary to walk at night.
I thought the room was clean until I saw the blood stain on the duvee! I wouldn't rent it again.