We are so happy with our purchase!  It is great to receive this mattress in a box, we were like 2 children taking it out.  If you follow the simple 3 steps, you shouldn't have any problems.  Remove the first plastic bag, onroll the wrapped and compressed mattress on the floor and carefully cut the plastic wrapping.  You will hear the air coming out of the bag.  Once the bag is removed, the mattress will take its shape but will need to rest untouched for at least 48 hours.  My partner always used to complain of a sore back when getting out of bed but knock on wood no more back pain.  To top it off, it cost less than 300$!  We placed it on top of our existing box spring but I believe that it would be fine to place it directly on platform bed.