The one where Sims won't sleep in their beds for longer than 20 sim-minutes.

So I've seen 'fixes' that mention resetting the object or the Sim and usually that will do it. This time however it didn't. I started out with the Murphy bed and then changed it around with different beds, resetting Sim and object after each change. I've moved stuff away from the bed, and rugs out from under the bed. It is in a microhome that I built myself, no MOO. Any other thoughts on what I can try? I don't use mods or CC.