Our staying at Alessandra's was just perfect! The house was just as described on the web, which was clean, comfortable, and lively(thanks to a lovely dog 'Miss'!)
Although I couldn't speak Italian and their(Alessandra and Gennaro) English was not fluent as natives, but we really had fun talks in the morning or at night, which made us feel like to learn about Italy and Italian more*.*
The location was also great enough to get to the main places in the center of Rome, taking a tram or a local train near the house. (We sometimes walked back home, and it was quite doable*.*) Besides, the house is in the residential area, so it's good for someone who wants to spend quiet time at night. And the building has limited access-only for the residents- so we felt safe to stay.
We'd love to stay their again when we visit rome next time!