After a week wandering the streets of Sicily, I’ve got a hankering for books set in Italy. I was going to say Sicily, but I’m worried all you’ll give me are Mafia books – and I don’t read those – but if you do know some stuff in my areas of interest that’s set in Italy, bung it in the comments. Thanking you!
Verity Reads Books (lots of them) 
For Sicily, That Summer in Sicily by Marlena de Blasi, On Persephone’s Island by Mary Simeti, A Sultan in Palermo by Tariq Ali.
One of the Elly Griffiths books has a significant bit in Italy