I am a celiac and had the Mediterranean bream fish dish, which was delicious. Our waiter was very accomodating and spoke good English. They also have beef dishes and burgers (including chicken) and they can adapt most of their dishes. I don't think they have a dedicated cooking area if you are highly sensitive. The water was also excellent, i.e., not the fizzy stuff currently popular in Europe.
— Somewhat
— No gluten-free information on the menu
— Some
— Excellent