No gluten free menu, you won’t find many with gf menus in Puerto Iguazú, but the waiters at Aqva were very knowledgeable and accommodating, showing me what I could eat. They do speak English here if your Spanish skills are a bit shaky. I had a filet mignon and it was delicious. Good potatoes, veggies, and salad too. Dessert was passion fruit mousse and flan. Everything was delicious! And pretty fairly priced.