The fact that I actually have a bed in either room. Both are very small rooms. I'm not sure who designed this house, but apparently he or she never saw a bed before deciding how big to make the bedrooms. I've been told the house is about 100 years old, so maybe he or she laid out the dimensions after the briefest of glimpses of a mere drawing of a bed in an old Sears and Roebuck catalog. Certainly he or she must not have had any firsthand experience with this particular item of furniture.
Architects suffering from sleep deprivation almost certainly do very weird things.
Just in case anyone reading this has never seen an old Sears and Roebuck catalog, I've taken the liberty of going out and acquiring one before proceeding. It would have no trouble fitting into either of my bedrooms and, as such, would be well worth twice its listed price. A modern king-size bed, on the other hand, would be impossible. A queen-size bed would be inconceivable given the physical laws of the universe as we know them today. Even two twin beds would be out of the question, forcing me to conclude that a married couple never lived here prior to the 1970s.