Which beautyrest mattress is the best? The Black Mattress is the best Beautyrest mattress. At the time of writing, it has more reviews than the Hybrid Mattress and a higher score (4.5 out of 5).Is beautyrest mattress good? The Beautyrest Black does a good job of providing the support you look for in a mattress with all sleeping positions. In tests it provided a steady level of spinal alignment, no matter what sleeping position was adopted.Are beautyrest mattresses good? The Simmons Beautyrest Mattress Review (2018 Edition) It’s common knowledge that a good night’s rest is vital for heart health, a stable metabolism, learning, memory, and overall happiness. However getting this rest can sometimes be challenging if you’re tossing and turning in bed due to an old or sub-par mattress.