We have stopped for breakfast many times on the way to Seville and it was a place that I recommended.
Today we stopped and a person has celiac disease, we politely ask if the tortilla has gluten and a waiter answers us very rudely that it is not gluten-free. According to the regulations, by law you are required to have a list of allergens, if you don't have one and you don't even know which foods contain gluten, at least be polite to your customers. After this, on my part, no one stops again. The treatment received is shameful.