I was a bit disappointed with this purchase.  I suppose it's true, you get what you pay for.  With an added board under the mattress this may actually hold up to kids in this bed.  If you're thinking of using the lower full bed for guests that are bigger than 4' think again.  There is not much distance between the top of the mattress and the bottom of the top bunk.  A tad close for an adult.  Kids seem to love the cave like look.  Overall if your kid isn't crazy jumping in this bed it may last a couple years.