After reading many of the reviews, we decided to test our fate with this sofa bed. It's a good buy and suits our purposes well. It looks good and is very functional. We just received and assembled it today, so we haven't slept on it yet, but it's comfortable (and firm) to sit in and we expect it will be the same for sleeping. It's bigger than a twin but smaller than a queen, so perhaps it's closest to a double. In terms of assembly, we found other reviewers' comments to be true but would have appreciate more detail. The assembly is pretty straightforward but the instructions are lacking, although they help enough to figure it out. Some valuable tips we learned when assembling: When using the three bars to attach one sofa cushion to the other, the key is getting the holes to line up (and they aren't drilled precisely. You may want to switch the bars around until you find the best alignment, and be sure to have the side with the grooved holes up, so that the screws can function.) Put the three bars in on the same side, lining up the holes, and lightly put the screws in to hold the bars in place. Then attach the other sofa cushion. To get all of the holes lined up so that you can fit in all of the screws, you'll have to pull and tug at the bars, so drop the screws in the rest of the holes but don't tighten them all the way, just enough so that they're in the grooves but so that there will still be some play/wiggle room. Once you have them all in, go back and tighten them all. It's easy to figure out how to move the back of the sofa up (just lift it up, you'll hear it ratchet and it will stop in the various positions.) It's also easy to recline it, but figuring out how took some trial and error. If you're standing behind the sofa (the movable cushion) PUSH the cushion down as far as you can, then pull it back. (It will release and then come back all the way flat.) Alternatively, you can stand in front of the sofa and pull the cushion all the way down, and then push it back flat (falling on top of the sofa as I did in trying to figure it out!) Hope this helps other buyers figure out the assembly quicker than we did. Still, it was pretty easy overall.