Maria's flat was lovely, our flight was delayed but she waited for us at the flat to explain everything. It's within about a half hour walk of the Centro Storico so ideal if you don't mind a walk up the river. If you don't fancy the walk, Maria has provided a thorough map of bus routes etc as well which was very helpful. Across the bridge is Trastevere which has lots of nice local restaurants. I definitely recommend Maria's flat!