We stayed in B&B La Lupa 6 nights.
Excellent location: very well connected by public transport with city center and airport (Fiumiciono), train station; walking - 15 min to the center of Trastevere.
Clean, neat - towels are changed & cleaning service - every day (big surprise for us), fully equipped kitchen (available 4all guests), quiet and safe.
The bathroom actually not too big, but enough for us. Boiler water = typical for Rome or Paris, so it cannot be consider as a big inconvenience.
Cristina is veeery nice person and concrete. Great contact before our trip and during our staying in Rome.
Breakfast: coffe + cake in typical roman bar - great start of the day.
Good wi-fi, airconditionned rooms.

We really enjoyed our stay! We recommend B&B La Lupa !