Despite the reviews of how hard / confusing it was to put together, I found the single sheet of instructions rather intuitive, with a little examination of the parts and the hardware. With only hand power - a racheting screw driver and a wrench to hold the nuts, I put it together by myself (I'm a 50+ petite woman) in about 2 hours with breaks for water on a warm day. :) 
It feels quite solid and I've slept on it a couple nights now. No squeaks or creaks or wobbles. I will do another round of hand tightening all screws/nuts in a week or two.
*EDIT* 4 months later... I had to dismantle this bed in order to move. Many pieces of the poor quality hardware immediately stripped. One star removed for that. Fortunately, my movers made do and I was able to put it back together at the new place. Otherwise, it remains a good sturdy bed.
*2nd EDIT* 12 months later... the bed is now beginning to creak.