They clearly mark their menu both online and in the restaurant with which items are gluten free.
Check it out here
I have been there twice since they added more items to the menu including 2 deserts.
What I have eaten (and I recommend them all!)
PAELLA VERDURAS- Seasonal Vegetable Paella, you can order this for one or two people.
A FESTIVAL OF MUSHROOMS- Mushrooms in garlic butter and white wine
‘SALSA’ CHICKEN WINGS- Spicy chicken wings
POLLO CON SALSA- Chicken cooked in a mushroom and sherry sauce
There are so many options I need to go again to try them all. On their menu they also have ready made selections of tapas if you aren’t sure what to choose, they have a Gluten Free Tapas Selection.
There is a Chocolate Fondant, which I assume is like the ones in Italian restaurants like Zizzi, so although I do love that I went for their Chocolate and Toffee Tart which was very nice, it had a very thin layer of gluten free pastry, and a chocolatey filling, served with a strawberry. It was nice to have something new! They also have ice creams and sorbets.
The best thing is you can order a loyalty card for free on the website and then you get 20% off your food every time you go!