there is (or used to be) a restaurant (with limited hours for serving) in a hotel on the far side of the island. I had a breakfast there once - on one of the worst days of my life. Not bad - or exceptional - but pricey.
Actually, I think that if someone opened up a good restaurant (maybe with a seafood + Italian menu) then it could be VERY successful. It could be moderately pricey but the food would have to be pretty good and it should be located within a few minutes walk of the waterfront. If you were to do that - and get a liquor license as well - you could make a small fortune.
Jerry