Yup, I've read all of Mayle's stuff and enjoyed it tremendously, despite reading somewhere that even the non-fiction stuff is ahem, "stylized".
I also enjoyed Francis Mayes' "Under the Tuscan Sun" and "Bella Tuscany". Her NF work, "A Year In The World" was much less captivating, and I've read none of the subsequent titles, though I know she has returned to her southern roots and lived to tell the tale. Also somewhat fictionalized, which you will understand after reading the second book. A similar kind of story, told from a woman's point of view. The movie wasn't bad either, because, Tuscany, even if they did screw with the plot line.
Speaking of movie adaptations, I adored "My House in Umbria" which stars Maggie Smith. I love it to this day. I read the book afterwards and didn't feel like the movie missed anything, which is a rarity, as every passionate reader knows.