You see a lot of thatched houses in Keihoku, it's called Kayabuki in Japanese and is a classical style of architecture in the countryside. They are made of hay and are very cool to be in during summer, but they are also freezing in the winter. That said, my guests and I have had heart-warming times when sitting around a fireplace with family during the harsh winter.
I stayed in there myself before and loved how spacious these houses are (They can accommodate up to 17 people) and they have modern bathrooms and kitchen, which is great for an original city dweller like me. Yet, the accommodation keeps its common areas like the living room and buddhist altars, very traditional.