You can use the sofa / beds in the Couple Condo separate or connect them to one big, cozy mattress. To connect the beds, simply pull out the two metal bars underneath the bed and lay them down on the black metal bed rack holders:
Put the table tops and the two big couch backs in the middle to create a big bed:
Be careful
Do not stand or kneel on the bed as the metal racks can break!
Watch this video for a more detailed explanation: