(Image credit: Future) If you've been dreaming of treating your sleep to a luxury mattress, now is the time to buy — there's $400 off the 5-star Saatva Classic Mattress at Saatva when you follow our links. Plus, shopping now will deliver cooler, more comfortable sleep ahead of the Memorial Day rush. I've been hands-on with the Saatva Classic and I can confirm it is the best mattress for every sleep style and justifies every cent of the $1,779 price tag for a queen (was $2,179). Our lead tester described it as "sleeping on a luxury hotel mattress " and credits it with delivering some of the deepest, most restorative sleep of her life. Why you should shop the Saatva Memorial Day sale Luxury sleep, night after night The Saatva Classic in our lead tester's bedroom. (Image credit: Future) Saatva makes its mattresses from high-quality materials including organic cotton, CertiPUR-US certified foams and recycled carbon steel coils. Each mattress is handcrafted to order in the US.…