Firenze Shore?

I knew season 4 of Jersey Shore was filming in Italy but I just learned that their filming in Florence which is about an hour and a half away from Orvieto! I've only watched the show about four times out of boredom, but the film and TV nerd/celebrity stalker in me really wants to go hunt them down in Florence. I also find it weird that this is the closest I have ever been to the filming of Jersey Shore and they have shot three seasons in the US...