I spent two weeks at Barbara's flat and thoroughly enjoyed every bit of it. The location is superb, bang in the middle of the Monti area but secluded enough to avoid street noise. You are around the corner from the Cavour metro station should you need to go far, but also central enough to walk to most places in central Rome. Barbara was a great host, accommodating and very quick at responding to queries. The flat itself was great both as a holiday stay and as a place to work a few hours a day.