I know there are lots of yorkies happily sleeping in human beds, but not my baby. I stopped sleeping with yorkies after my other two went through a terrible bout of ...YUCK...diarrhea!! I am sure I needn't say anymore than that, lol.
Also, Wosie was recently playing on my bed, fell off and broke her leg. I can't imagine I will ever let my girl sleep in my bed at night.
But if you do, good luck!