Martina is such a great host!
She was very patient and speaks great English, she knows so much about the city she lives in and can provide excellent advice and recommendations.
Trastevere is a great place to stay, close to some great restaurants and bars and in a nice friendly district which isn't too far to walk into Rome centre.
The room itself was a little smaller and darker than we had expected, with the only natural light coming in around the front door. The bathroom is also quite small and the water tank doesn't hold much hot water, so if two people (or more) are showering then you need to be quick! Also the air conditioner unit rumbles on 24 hours a day and we couldn't find a way to turn it off, you get used to it, but it is an it annoying.
These things weren't big issues for us as we were so busy seeing Rome, that we really just came to the apartment to go to bed and get ready to go out. Martina lives very close and is always on hand to help with any issues.