I understand that most of the reviews are negative because the Chinatown is so small but I'm just happy there is a Chinatown!
It's got such great goodies like Harmonie and the touristy dragon beard place. It's also where I go to get my haircuts, buy cheap fortune cookies, discover new desserts/bubble teas/drinks/sushi/general tao chicken/and more!
Definitely check it out if you haven't already or if you're visiting.
Some of my personal favourites here are : C'est la peau beauty store, Noodle Factory, this random sushi buffet place that is located on top of another building (do some digging!), Chatime, Capital Tacos, and all the little random stores where you can find some cool gifty/touristy items.
And once you're done visiting, you can walk to Old Montreal!