Is the Helix Twilight Elite good for side sleepers?

It is a firm mattress, so many side sleepers find it too hard at the shoulder and hip. Side sleepers who want cushioning usually do better on a softer hybrid or foam bed.

Does it really reduce motion transfer?

The pocketed coils are designed to isolate movement, so a partner rolling over is felt less than on a traditional open-coil mattress. It is not as still as memory foam.

How firm is it compared with other Helix mattresses?

It sits at the firm end of the Helix lineup. Sleepers who want a plusher feel should look at the softer Helix models instead.

Is the edge supportive enough to sit on?

Yes. The reinforced perimeter is one of its strengths, so the sides stay firm when you sit on the edge or sleep near it.

Does an innerspring mattress sleep hot?

Coil beds generally breathe better than dense foam, and this one has no thick foam comfort layer trapping heat. Most sleepers find it sleeps cooler than all-foam rivals.