Alternatively, some custom furniture makers may be able to create personalized bunk bed designs to accommodate a king-size mattress. Keep in mind that custom-made furniture can be more expensive than mass-produced options.
If you have space constraints or are looking to maximize sleeping arrangements, another option to consider is a loft bed that can fit a king-size mattress on the top level while leaving the bottom area open for other uses, such as a workstation or seating area.
Before purchasing any bunk bed, make sure to check the safety standards and weight capacity of the bed to ensure it can safely support a king-size mattress and the occupants. Safety should always be a top priority when considering any bunk bed design.