Mid Sleeper Beds A mid-sleeper's mattress is similar to the high sleeper, but it's lower and usually has a shorter ladder. These beds are great for small children or rooms with limited space. Mid-sleepers come with a variety of design features, such as desks, shelves and even tents. Look over https://www.bunkbedsstore.uk/products/white-pine-mid-sleejson-bunk-bed-with-slide