I give it four stars because in the first step I was blocked because the pieces didn’t exactly fit together. I had to use a rubber mallet that I already had to get the pieces together. And the isn’t a one person job at all, however it is possible… It’s easier to build it on the bed than to build it and then put it on the bed too.I would recommend! I definitely feel a difference in my mattress and once you get pass the first step it smooth sailing afterwards.