Is a plush mattress like this good for side sleepers?

Yes, side sleepers are exactly who this 2-out-of-10 plush build targets. It scores 9.0 for pressure relief with 2.27 inches of sinkage, so shoulders and hips settle into the gel-and-latex cradle instead of stacking pressure. The contour stays balanced rather than swallowing you. Back and stomach sleepers who want firm push-back will find it too soft and should size up in firmness.