Comfortable for a night or 2 but not for regular use
I purchased the Savant III with the $1k upgrade to add the additional cooling gel. I was not that familiar with how hot you can get sleeping in a memory foam bed and that it why I wanted to invest the extra money so that we wouldn't be hot at night. The mattress store also sold me a warranty with a very expensive mattress cover with additional cooling gel in it. We keep our house at a constant temp of 68 degrees year round but it gets to hot to sleep on. I am a person that used a heated mattress pad on high all night long on my prior mattress and I can barely sleep on it. My spouse is always hot - so he rarely sleeps in our bed and prefers to stay on the couch. We actually took the cooling gel mattress protector off and that seemed to help a little bit. I have called serta several times to see if there is a mattress protector / cooling gel that they would recommend - and they don't say any specific brand/style other than saying to add a memory foam topper - my mattress is already extremely deep and if that memory foam is making me hot - why would I add more?. 2 1/2 years in my $4k mattress purchase ($2784) adjustable frame - and I will be going out to purchase a new (non-serta) mattress and move this to my spare room. I would throw it out but I do currently have a spare room without a bed in it - and my older dog seems to like it.