Maybe it will tell you a lot about me!
Here is more information about the shikibuton. We made ours by hand, and will soon be making a new one. We went to a mattress factory and picked up the queen-sized components, two different kinds of foam, and also a lot of cotton batting from a fabric outlet. We hand-sewed a linen cover around the foam and cotton layers, and placed the entire shikibuton on a hard foam base that split into three parts. The shikibuton is stored folded, against the wall in our main room, and lends itself also as a 'futon' couch. We are planning to visit Japan in about five years, and will learn a lot more about real shikibuton making there!
It took me several weeks to get used to sleeping on this type of bed - but now sleeping in normal beds is hard! It takes longer for me to fall asleep in 'soft' beds now.