I waited a good month before writing my review as I wanted to be sure that I was accurate. Here is what I have found: The first week - oh my gosh, I felt regrets purchasing this mattress! It was indeed very soft, but when I awoke, I had a slight lower back ache. Darn! I loved getting into the bed, as it is like no mattress you will ever feel. Incredible - incredible as in the equivalent of a $4000 + mattress set. To my amazement, as I neared the end of the first week, I found that I woke with no backache whatsoever. In fact, I was getting much better sleep then I have in years. Yes, YEARS. I have a VERY stressful job, one that was keeping me awake for hours on end or I would wake up and couldn't not fall back asleep, as I was just worrying and fretting all of the time. It was to the point, that my doc wanted me to take meds to sleep. To my amazement, after that first week (perhaps I needed to adjust?) I now sleep right through and in a deep sleep. If anything, it is difficult to get out of bed it is so comfortable. The mattress itself is thicker then most (and you will need extra deep pocketed sheets) and it also has a three or four inch "temperpedic" type of cushion that is layered on top. It does not make me "hot" when I sleep. It is truly amazing. I know I sound like a commercial, but I sincerely am able to sleep now, and no matter what before (different mattresses, cushioning etc) I never could before. Some might find it a little soft... but to paraphrase my sister to visited and fell asleep on it, "it is truly a princess bed." I just know even the Queen of England herself would love this mattress. Thank you Serta and Overstock for this mattress. I know it sounds silly, but my life has changed as I am now truly rested.