Visiting Spain from the US and stopped in Peñiscola for 1 night on our way to Valencia. My mom has Celiac which often makes it difficult to find places who can accommodate. However, the whole menu was gluten free aside from pastas and pizza. The staff was very kind and brought us out patatas bravas, which we did not order, to start (and were delicious). The restaurant itself was very nice and had lots of seating. We ordered Valencian Paella (gluten free) and the Fish fry, both very good. Overall, excellent service and gluten free options, I would recommend!