I am inbetween a 3 & 4. The futon is sturdy & I like the wood finish. It wasn't too hard to assemble but I needed someone who knew what they doing rather than relying on the instructions. The futon is Very Difficult to transition into the couch position. It does not glide easily & when you lift up the back to put in couch setting, the whole frame lifts up. It is even difficult with two people.