I found out through experience that there's not much in the way of food near YUL hotels. I stayed at the Holiday Inn Express on Cote de Liesse recently and the oven was broken in the hotel restaurant, so I had to order delivery. I used Dorval Pizza and Mike's, which were both decent but nothing special. After several days of nonstop business meetings I was too exhausted to take the bus/metro an hour downtown and an hour back to the hotel.
Next time I'm in Montreal I'll be staying downtown and renting a car.