This was by far the most incredible experience! We stayed at Kiyashiki during our honeymoon and were completely blown away. It is based in a little onsen town outside of Fukuoka and it is isolated on the top of a hill, surrounded by the forest. We booked a room that had an open air hot spring bath outside and another hot spring bath inside; it was absolute bliss! The staff were so incredible and kind and the facilities were beautiful. It was peaceful and serene and the traditional food was really delicious and added to the experience. If you check in early, the staff will drive and pick you up from town so you can do a little exploring. I cannot recommend Kiyashiki enough and we can't wait to go back!