Mara's place is great – it's large and has a nice balcony and good kitchen to cook in. Having two bathrooms is great as well.
The main bedroom has a nice queen-sized bed, and the second bedroom has a smaller twin bed (you can't really ascertain that from the photos), but it's still comfortable and cute.
As a host, Mara was easy to communicate with, always available, pleasant and courteous. She even left us a special Christmas treat upon check-in. Would highly recommend her place to anyone looking for great value in a nice area of Rome away from the touristy center but still near public transport.