My husband and I just spend three nights in Rome. This B&B is at a great location in a private quiet beautiful old building (with an elegant old elevator) in the Prati district. If you are staying for longer than 3 days you can easily walk it all from here, without having to book a hop-on-hop-off bus.
It was clean, quiet, came with a ensuite bathroom and for breakfast you just help yourself in the kitchen to buiscuits, toast, coffee and tea...
Defenitely recommend it. We had a great time.