We ate here 6 times over the course of a week in Sept '16: 1 dinner and 5 breakfasts and had no issues. The dinner was amazing, and the waiter was quite knowledgeable about Celiac and GF, and went through the menu item by item with us. The menu changes regularly (farm-to-table), but we enjoyed a beet salad and several small plates, including the amazing grilled octopus. The breakfasts included with our stay were buffet-style, so caution was required (they do have a breakfast menu as well). However, they used dedicated omelette pans, and the fruit bar had no glutenous items on it. We did not have any issues with these items. The fresh squeezed juices were amazing too. We did not risk trying the labeled "GF" pastry items, though they were clearly indicated.
Update Dec '17 - returned again, this time for dinner-only. Waiter was very attentive and knowledgeable. We ate several dishes (small plates), and had no issues.