I stayed one night at Japanese traditional hotel, so called "Ryokan".
It locates along the beach and it has "Roten Furo"(a open-air hot spring water bath) on the roof with nice ocean view.
( Actually, it is the gulf view; Mikawa gulf is rich with many sea creatures and we enjoyed a lot of seafood in dinner.
The dinner is typical "Ryokan" cuisine, a soy source based boiled snapper, a grilled shrimp, slices of abalone, octopus and vegetable pot, snapper rice, etc. including a dessert dish.
Snapper rice is the picture below; topping sesame, wasabi and dried sea lettuce, then pouring the special soup for snapper rice.

The breakfast is also typical Japanese style: a bowl of miso soup, porched egg, marinated vegetables, dried fish and some salad.