Cristina is a very nice host. She is always ready to help with anything you need. The communication with her is fast and effective.
The flat is small and modest but good for those who are planning to stay in Rome and avoid paying big amounts of money for accolmodation. It is far from the city center (around 25 mins by bus) but well conected. There is a bus line that passes near by and also there is the Trasteveré station only 15 mins by foot. In this station you can take the train that goes to Vatican city (10 mins ride). Moreover the street where the flat is located is very commercial and you can find lots of shops and supermarkets.
Cristina is able to offer a ride from or to the airport or train station for an additional fee. If your visit is short (as mine was) I would suggest that you take this option. It will make you save a lot of time cause transfers could take some time due the location of this flat.