Venice
Thankfully, there is a social enterprise based in Venice, which works closely with the Venetian business owners, shops, restaurants, and bars included. They have a certification process where the local artisan shops attest and commit to selling products that are both authentic and sustainable as well as to give a 10% discount to the customers carrying a "Venezia Autentica Friends' Pass"  ( buyable online for only 10 euros). The shops are part of the program are easy to spot thanks to a sticker on their door.