Single bunk bed is a type of bed that has two sleeping surfaces, one above the other, allowing two people to sleep in the same floor space as a single bed. It is also known as a bunk bed, a bunk, or a loft bed.The upper sleeping surface is typically accessed by a ladder or a staircase, and it is surrounded by safety rails to prevent the person sleeping on the upper bunk from falling off. The lower sleeping surface is usually situated perpendicular to the upper one and can either be a separate bed or a convertible sofa or futon.
Single bunk beds are commonly used in situations where there is limited space, such as in childrens bedrooms, dormitories, hostels, and military barracks. They are also popular in vacation homes, cabins, and campsites.