Does a deep plush mattress like this sleep hot?

No, it sleeps remarkably cool for a soft, deep bed, scoring 9.6 for cooling, the best of any plush model in its line. A 1-inch gel-infused foam layer pulls heat off the surface, and air circulates freely through the 1050-coil pocketed core instead of sitting in solid foam. The plush memory layer is the one heat-holding element, but the airflow channel beneath keeps the bed in check. Surface temperature peaks near 29 to 32 degrees Celsius.