Butter has similar behavior. We used to keep him crated in the w/o basement during the night. This is also the place he has dinner and plays. Seeing here in BPO, pups usually sleep with their owners, and he is not crated anyone, I try to make him sleep with us in the bedroom, but he and my wife do not like the idea. He keeps getting back to his "place" when he sees a chance, though he doesn't bark to get in there. My wife is a lighter sleeper, she can hear everytime when Butter gets up... Should I let him choose where he sleep, try to make him sleep with us?
BTW, the basement also has our big screen TV, and services as my wife's home office, so he is not alone most of the time.