We really loved our stay at Antonello's cosy apartment. It was very clean and has a GREAT location - it really is right next the the Campo de Fiori:-)
We had some problems with the heating, or perhaps the lack of it. It was very cold for all 4 days(too cold to enjoy the complimentary wine), and it was only the "upstairs" bedroom that got heated up. The same with the water - only enough hot water for 1 normal shower or 2 very quick ones. Maybe it was because of the unusual cold winter, but it meant we had to relax in cafes instead of "at home".
Other than that, it was really nice and cosy, and Antonello was very helpful. GREAT location! I would definitely stay there again:-)