My wife and I stayed at Paolo's B&B and found it to be a fantastic place. It was quiet and very comfortable. The space was more than enough for the two of us and our luggage.
There was a fantastic Ice Cream parlour downstairs which was brilliant.
We found the location convenient as it is only a short walk from everything and not busy in front our door either. It was easy to get some rest on the comfortable bed.
We saw almost all the important monuments without any public transport (we were willing to walk around a bit - but it was possible).