When building bunk beds, some plans include just the bunks, while others also include plans to build drawers and other features. A king bed is generally seventy-six inches wide and eighty inches long, making it about six inches bigger than a queen size bed.
King beds are great if you are taller, and therefore want more room for your feet. Another reason that a raised air bed is much preferred over the older air mattresses that are down at ground level, has to do with being able to get in and out of them easily. Many manufacturers have now inserted a layer of convoluted high-density foam, air flow layer, non memory, between the base and top layers, to help dissipate body heat.
Some air beds even have multiple chambers that adjust separately. It also seems that the dual wave beam construction of the bed made it more stable and comfortable, especially when used by two people. Often people report that they enjoyed the best night's sleep they have had in a long time.
But don't take my word for it, go and try them out for yourself. Don't simply purchase the first one that you see, read reviews of the different bed offerings, and find the best when it's available.