Sleep quality is good. But the edge that I sit on while getting into bed, and upon arising, has softened....and is getting softer. Getting harder to get out in the morning without rolling off the bed. (I am 88 years old weighing in at 156 lbs with all the aches and pains worthy of an 89 year old guy.) You already know all the good stuff. Your mattress is great while i'm on it, I sleep really soundly; but I guess I need a step stool.