A combination chair/bed furniture and method of using. The furniture includes a support frame system and a multi-fold cushion assembly adapted to be supported by a frame of the support frame system. The cushion assembly includes folded cushions that define a seat cushion supported by the frame in a chair configuration of the furniture and when extended defines a mattress supported by the frame and at least one mattress support frame of the support frame system in a bed configuration of the furniture. A seat back is supported by the frame in the chair configuration of the furniture and serves as a headboard or additional mattress in the bed configuration.