A little warmer than coil mattress, but better support. Great for not disturbing your partner getting in and out - if we didn’t have ours on a box spring base, it would probably be even better. Pillow shape and firmness were not great for us, but kept them for guests.
I love this bed. It's extremely comfortable for side sleeping, but still gives enough support for the back. It's only been a couple of months and I'm hoping I can still say the same a year from now.
We absolutely love the mattress but we have one problem. The edge of the mattress seems to lack the support that the rest of mattress has. You can definitely feel a sensation of rolling out of the bed. So for those that sleep to the edge of the bed you might feel like you are going to fall out. But overall I love it. I get great sleep, I’m always hot when I sleep and this mattress has definitely lived up to being cooler.