Fun & strong, once it's put together.  My husband and I have assembled many things and follow directions carefully, but a few of the  top frame pieces were labeled incorrectly so that caused a problem.  We followed the written directions/labeled drawing but the mislabeled pieces were in the wrong spot on the top frame. We didn't realize it until it was time to attach the legs and the holes didn't line up (the labels for parts B1 & B2 were switched and the two pieces labeled B2 were not EXACTLY the same so the holes didn't line up with the leg's holes until we traded their locations)  Everything else went together well.  You will need a strong person to install the first round of springs on the long sides. We bought the 120 x 204.  The size is great for our 12 yr. old child and friends.