A daybed is the perfect multipurpose furniture piece. Use it as a sofa and lounging spot by day and a comfortable sleeping spot by night. Most daybeds accommodate twin-size mattresses and feature a three-sided design with a back and two sides. For even more versatility, consider a daybed with trundle. The trundle offers an extra sleep surface and slides out easily on casters when needed. This is a great option for any home office, guest bedroom or den.