Bought the platform frame at Wayfair too.  Love this mattress.  Was not sure on first the first try as was firmer feel than use to, but found it hugs the body at same time.  My hip and back pain have gotten better in one week.  Have had back an shoulder surgery.  Not a bit hot either like my old memory foam mattress.  I did give it full 48 hors to properly firm up.  Love it.