According to Trip Advisor, they are pet friendly. https://www.tripadvisor.com/Hotel_Review-g42684-d90179-Reviews-Comfort_Inn-Sault_Ste_Marie_Upper_Peninsula_Michigan.html
I don't remember seeing any pets when I stayed there.
Doubt it but like tom said I would call and ask
Dont think so but you can call and find out if they are or not
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