I just purchased this bed frame.  I had a board that came with my old bed frame, even tho I didn't need with this frame, I put it on there anyways; help to keep bumping my fingers on the space bars.  With the board on top of the frame and my mattress, it's a little higher than I'm use to.   But I'll get use to it (just like I got use to my old bed when it was new).