There's loads of small hilltop villages that are absolutely mint - dead quiet, even in the summer holidays, windy old streets and a piazza at the top with old blokes shouting at one another and playing cards.
Montone, Anghiari and Spello probably stand out as the best of the smaller places. The views from the tops of these hills are crazy as well - you're looking at the landscape drawings you see on every bottle of wine you've ever had. Arezzo and Spoleto are a bit bigger with plenty to do and see.
The place we stayed comes highly recommended too - bang in the middle of nowhere so it's quiet as owt (apart from the farmers doing their thing and the fucking cockerels giving it the big one at 6am). Some American bloke put together this video for them using his drone (which he took on holiday with him?!).
https://m.facebook.com/story.php?story_fbid=1795841877148200&id=196892073709863&refsrc=https%3A%2F%2Fm.facebook.com%2F&_rdr
I didn't take many photos, but have attached a couple that come under the maximum file size requirement!