The Madrid Spanish Taverna has a lot of gluten free options on the menu. I was so excited to finally have some Montaditos, which I never get to do!
However, even though I put my allergy on the reservation, and I went back and forth with the waiter about the gf option (he bizarrely told me that gluten free means they do it without the bread, so I had to say, it costs $2 extra to make it without bread? This should have been a sign)
I noticed about two bites in that my stomach very much disagreed I was given a gf product.
So all that is to say, lots of options but you are really taking your safety into your hands with the staff.
— Not at all
— Gluten-free items are marked on the main menu
— Some
— Good