I've asked the desk whenever I've stayed. Occupancy in Canada is generally much lower.

Delta Quebec City was 50% occupied over a July weekend and the desk said that was a recent record. A brand new extended stay Marriott in a small town was going at 20% in early July. Looking at industry statistics, the Montreal area is at 17% occupancy on average last week and that's with many hotels still closed. I wouldn't be surprised if the Marriott properties near the airport are running at around 10% based on their rates.