I think that you misunderstand; the statement is not referring to a Western-style bed. The bed is a traditional "yo" which is like a double layered blanket similar to an old-fashioned feather bed which is unfolded and thrown/placed onto the floor at night or whenever one takes a nap. When one gets out of "bed" , the bed is folded and put away in a closet until it is needed again. Sleeping on a "yo" on the floor is very comfortable and allows the bedroom to be much smaller than if one uses a Western-style bed. The modern day Murphy bed serves a similar purpose in some homes in the U. S. A.