First time to try Poutine and while it was ok definitely had better in other places later on during my trip. We had a super friendly server and loved the back yard location - really interesting stuff to admire on the walls, they have definitely upgraded their backyard since the photos were taken.
Yes, the establishment is on the tourist trail and would not be highly rated compared to the huge amount of fine establishments in Montreal.
Save yourself ordering the coffee. I think the instant fares better. Stick with the beers.
In fairness, we didn't get to try other items on the menu. Would I go back? Yes, if I was in that area again and needed a snack.