We dumped the little ladder (which in addition to being hard to use, hurt your bare feet when going up and down) and replaced it with a lightweight, folding, three step ladder. Big wide steps get us up there and give far more balance and control. Plus, when coming down from the bed the big steps are a much easier target than a ladder step. The step ladder folds and sits on the bed when not in use, just like the original ladder. We found the step ladder at home depot. It costs a little more for the super light weight aluminum version but it is worth it when folding it up and lifting it up onto the bed.
