The house of Bea & Sara is very close to the train station of Rome and also to the place where shuttles from Ciampino and Fiumicino (the airports of Rome) pass by.
It is reasonable close, walking, to the main historic areas but since is near the station you can go by public transportation to almost everywhere easily!
Sara was very nice and available for my questions.
I recommend this place for a single person or a couple!!