Mid Sleeper Beds A mid-sleeper bed is similar to a high-sleeper but at a lower level and typically with stairs or ladders that are shorter. They are ideal for small children or bedrooms with limited space. Mid-sleepers come with a variety of design features, including shelves, desks and even tents. https://www.bunkbedsstore.uk/products/avalon-midi-sleeper-bunk-bed-single-size