FYI, the resort in Tuscany did not have Internet in each room. There is a lounge area at the top of the stairs where the wireless internet signal was the strongest. I found that you really needed to be close to that room. The room has a sofa and a couple of chairs for seating.
Also, at the Bernini Bristol in Rome, they have a computer in the area near the registration desk that you can pay to use.
There is wireless internet available in the VIP Tintoretto Lounge at the Venice Marco Polo Airport. I believe there is paid internet access in some of the departure areas.
It appeared that
tin.it was the most prevalent provider of Internet HotSpots in Italy.
http://www.tin.it/mobile/caratteristiche_ENG.aspx