It is 24 hrs. I have stayed at this location.
24 hours through Marriott, varies for pre-paid booking based on the site you use.
If you go through Marriott, they usually let you cancel 34 hours out.
It would depend if you booked your room through Springhill or through a 3rd party site.
I think 24 hours notice unless you did a pre-pay reservation (those usually include a no refunds clause).
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