Is this a good mattress for couples?

Yes. Motion isolation scores 9.5, exceptional, so a partner shifting or getting up barely registers on the other side. Two spring systems drive it: the 1250 pocketed support coils each compress independently, and a finer micro-coil layer above adds a second tier of isolation, with an inch of memory foam absorbing contact movement. Edge support is also strong at 9.4, so both sleepers can use the full width of the bed right to the border.