I only have gluten sensitivity but I always mention celiac when I go somewhere new. The staff behind the counter looked at me like I was speaking French. I would say unsafe for celiacs. When I asked for no cheese on my tacos I got two tacos with a dusting of cheese on them. Really should only rate two stars but they were super nice about it.
Restaurant was dirty so I am sure the grill was contaminated. Staff had no idea about what gluten free even meant. We got ice cream and left.