Nice location, unpretentious, very kind staff.
The best pizza I've ever eaten, the gluten-free one and (although with the possibility of contamination) in the kitchen they only knead with rice flour and the recipe for the pizza is theirs, so they pay attention (the only place in Ischia that knows that we celiacs exist).
If we return to Naples we will take a ferry to Ischia just to eat at Raffaele.