Don't go to the place downstairs as they don't have GF. This place is upstairs at the Mercato Centrale and they were thoroughly over everything. Washed the cutting boards, put paper down on the baking tray and double checked the ingredients. It was a few Euros more but worth it for the piece of mind. The sandwich I ordered was 10/10.
— Very
— Gluten-free items are marked on the main menu
— Most/All
— Excellent