Did a search on fridge, mini-fridge, refrigerator and Doubletree Montreal, and did not find a single relevant thread!
Stayed at the Doubletree in Montreal this week and asked to have a mini-fridge sent up to the room. (It's on my profile at Marriott, and I always ask at the Starwood when I check in, and there's never been a charge.) DT Montreal wanted $23! I passed, and filled my sink with ice instead.
It gave me satisfaction when they forgot to charge me for the valet parking.