We would highly recommend and especially Fabrizio.
Fabrizio guided six of us through Florence and Rome. He was funny, well educated, and a miracle worker at making sure we saw as much as was humanly possible - and that we had fun doing it! We all agreed that this was, by far, some of the best money we spent on our trip. Another group traveling with our party opted for the excursions offered by the cruise line and they only saw about a third of the things we did, for about the same price! We would highly recommend ELS, and especially Fabrizio, to anyone traveling in Italy.