The smallest couch you can buy for your needs is a 3 seater. It will fit your 6 feet frame and have 6 inches to spare.
However, a four or five-seater (90 or 108 inches) may be more to your liking. Either of these will have enough space left over to accommodate your needs if you love lots of space, are a restless sleeper, or have a craving for company. Read more