Heat pumps, when your partner wants to sleep in an icebox....

The remodel continues, and the plans to switch over to a heat pump are still in effect, but I'm wondering about one detail I need to sort out.

One of us likes to open windows and sleep in an icebox overnight, preferring it when the bedroom temperature drops into the low 60s.

From what I've read here, the goal of the heat pump is to keep the whole house at a comfortable temperature to be as efficient as possible.

I'm wondering if there are strategies for allowing a single room to get cooler overnight, while maintaining the more constant temperature for the rest of the house? Dampers maybe? I'd rather not have a mini-split just for that bedroom.

thoughts? this has to be a solved problem.