Just to add a recommendation for Trento (Mattarello). I spent a couple of years in the town, and flew with the gliding club there. The CFI is the airfield manager, and I spent hours chatting to the controllers in the tower. Avgas is definitely available, there's a great restaurant by the tower (and hotel if you're staying overnight), and a delightful museum based upon (but not limited to) the old Caproni company. It's a popular stop en-route south from Austria; ATC in English from those that need it, but a word or two of Italian will win a lot of friends! Oh, and spectacular scenery.
Windrusher