We have a queen platform bed in our casita that works well. It has six large storage drawers (two on each side) so no need for a dresser. We bought two more of these in white for the cabin (king and queen) also to supplement storage. We have 14-inch Zinus memory foam mattresses atop each. I like how solid/stable they are. No slats, just three solid rectangular boxes that fit together in a block “U” shape. I ordered them online from Poverty Barn.
These are quite high; top of mattress is 28” off the floor.
They do not have headboards. I posted a while back that DH made a board and batten headboard for the one in our cabin guest room (middle pic above, before headboard added).