Metella was an excellent host - she welcomed us nicely and told us everything we needed to know about the apartment.
I think the apartment is even better than in looks at the photos and even more spacious. The rooms and beds are big and it is nice to have an en-suite in both rooms.
Perhaps the only thing is the size of the kitchen - it is a fold out kitchen but as two young lads we managed find eating a cooked meal once a day in the flat.
It is located in a quiet area of Trastevere but it is close enough to walk everywhere.
All in all, I would absolutely recommend staying here.