An L-type sofa is a sofa shaped like a capital "L," designed to fit snugly into a corner, making it ideal for maximizing seating and space efficiency. Its design features a main sofa section and an extended part, such as a chaise lounge or a longer seat, that can be placed on the left or right depending on the room's layout. These sofas are versatile, can be used as room dividers, and are available in various sizes to suit both compact and large living areas.