The coverlet is nice, but it's polyester. You'll probably be more comfortable with cotton. You can also get mattress pads that are "cooling" - I've haven't tried that yet.

A very quick way to be more comfortable when the bedroom is too hot is to sprinkle baby powder on the sheets before you get into bed. A fan will also help.

If you have more than one wall, do you have to choose between the mirror and artwork? Can you find room for both?

We live in Florida and our bedroom gets afternoon sunlight. So, it can get pretty hot in the late afternoons. What we do is keep the bedroom pretty dark...shades shut. We also keep ceiling fan on low all the time. And instead of a traditional coverlet, we use our normal sheets, then a duvet cover....WITHOUT the duvet inside! The extra layers of lightweight sheeting is ample warmth, and duvet covers in plain white on white patterns are pretty easy to find. our favorite is from West Elm. Matching pillow,covers, a smattering of colorful throw pillows and a soft throw at the end of the bed...thats all you need.

@orangecamera and @oldgraymare Wow - great suggestions all around. I'll look around for a cotton coverlet or duvet cover I love. I've also heard linen is great-- what are your thoughts on linen sheets? Is that weird to pair with cotton?

I don't have any experience with linen sheets, so I can't say. But bedding is often called "bed linens" (as opposed to bath linens or table linens), they don't usually mean actual linen fabric.