I became a Barcelona regular after attending my company holiday party here in 2013. Since then, I've been here easily 20 times over the past year, and have never once had an issue with GF. The majority of the items on the menu are naturally gluten free, and the ones that aren't do not pose an issue for cross contamination. The staff is generally speaking very knowledgeable about the menu, and if the waitperson does not know, they ALWAYS have asked the chef. GF considerations aside, the food and service are consistently excellent here, and while there is always a core set of staples on the menu, every week there are new specials and creations, none of which have ever disappointed. Can't recommend Barcelona enough.