Our futon is an older version of this product:
https://www.ikea.com/us/en/catalog/products/S49149896/

Extremely comfortable as a bed! All our guests gave great reviews.
Cover is old, but clean -- no stains. Seams are all intact. Opens and closes smoothly.

(Bedding in images not included)

Dimensions (from IKEA website):
Product dimensions
Width: 55 7/8 "
Depth: 39 3/8 "
Height: 34 1/4 "
Seat depth: 23 5/8 "
Seat height: 15 3/8 "
Bed width: 55 1/8 "
Bed length: 74 "
Mattress length: 74 "
Mattress width: 55 1/8 "
Mattress thickness: 3 7/8 "