Ever since I moved this kitchen bar stool/chair upstairs - I have Phil sit in it when I give him his injections - Callie has taken a liking to the space underneath. No one is certain why she likes it, but she spends a lot of time there, seeming to prefer it to the bed. In fact, the other day, I found her asleep, with her head on the fan platform (where her paw is on the picture directly below.) Yes, the fan was running.
Maybe she feels safe from the dog under there. But then, the dog rarely enters the master bedroom. And Callie's always been a little strange. Go figure.