Montreal Chinatown is mostly Toi-San cantonese people (my people!) and so when we went here at 1:30 in the morning and this was one of maybe 3 restaurants that was open. Now...i'm from NYC. I've been going to Chinatown's and eating late night dinners over and over again since the early 2000's, this is the food i remember from then.
OK so i admit i was a little tipsy hanging out with my buddies grabbing a late night bite. I got, the ever-so-important beef chow fun and it was cooked exactly as i remembered from my youth. It wasn't revolutionary, actually it was only ok - but it was very nostalgic.
It's somewhere that everyone goes to at night if they're around chinatown and looking for a relatively cheap eat at night...so it's also a good place to look around and watch people (as someone else said). If i'm partying kinda late and we were hungry we'd detour here to get some pretty good canto food.
Oh and if you want something off menu and you speak canto - they'll probably do it for you.