How well does it isolate motion for couples?

Very well, with a 9.0 motion-isolation score. Each coil is individually wrapped, so movement on one side stays on that side instead of rolling across, and a micro-coil tier catches finer vibration as a second independent layer. Peak motion acceleration lands in the low 2.9 to 6.2 range, better than a typical mattress. A restless partner getting in or out is largely undetectable, and the wrapped coils keep the bed quiet too.