Purchased and assembled this bed in a king size.  Assembly was straightforward, but a bit tedious.  We love the bed, but the king size has a design flaw. The supporting structure for the mattress is attached to a separate cross bar/beam located below the main portion of the headboard.  The beam measures 3 1/2" x 1", which is insufficient to support the weight across the whole width of the bed.  The beam cracked and sagged after less than a weak of use.  Joss & Martin were great in addressing the issue.  Since we love the bed itself, we elected to keep the bed and repair it by placing a supporting post under the center of the beam.  Another reviewer experienced the same issue; but, we didn't read the review until after we had already purchased it.  I'm guessing the issue is especially problematic with the width of the king sized frame.