A Murphy bed is a space-saving furniture piece that can be folded up against a wall or into a cabinet when not in use. This design allows for more floor space in small rooms, making it ideal for studio apartments or guest rooms. Typically, a Murphy bed features a mattress that is attached to a frame, which can be easily lowered and raised. Some models come with additional features, such as built-in shelves or desks, enhancing their functionality while maintaining a sleek appearance.