Excellent location and a pretty decent bedroom. Smallish kitchen but the hosts were very kind in giving us access to it.
Downsides: The room is next to the shared bathroom and everything is audible. We were woken by a seriously drunk woman vomiting repeatedly and then wandering into our room. Another friend of the host knocked on our door while we were sleeping to retrieve some of his items from the room, waking us up.
Also, if you're stingy about a clean bathroom, this may not be the place for you.
If you're young, laid back and interested in nightlife in Roma, this is an excellent place to stay. Sebastian and his roommate are very kind and welcoming people.