WE ate in the Bignoreaux Langoreuse both nights and stuck to the standard menu. Few options but the specials change every night and we particularly enjoyed the monkfish skewers

A very convenient recently refurbished restaurant just as you get off the boat on the Ile de Batz the set lunch menu is 21 euros which is a bit on the expensive side for 3 courses but if its sea food you want this is the place. The ingredients are local and very fresh. The island is famous for potatoes and they are great. Wine list is a bit pricey too but since each bottle has to be shipped from the mainland its a price worth paying. I stuck to the local cider hear. We will be back.