Disclaimer: So while I haven't been to many Dim Sum places in Toronto (so I'm not sure if there's a specific style here), but I still have a decent sense for what Canadian Dim Sum tastes like.
So the interior of the place is... low key. Not all the chairs are quite the same, some tables have sauces while others don't (but you can self serve from their take out table[?]), and the decor is very simple. The garbage where they scrape off the leftovers from your plates are next to one of the tables. Needless to say, it's a casual place.
But if you're look for quick delicious food, this is the place to be at. My friend and I got Dim Sum Sunday lunch and the food was prepared quickly and was quite delicious. The steamed dumplings were delicious, the pork buns were tasty, and the spring rolls were pretty appetizing.
The service was quick, although I wouldn't expect any personal attention, but decent enough. And you really can't beat the price; for 22$ with tip we got 6 dishes.
So all and all, it's a pretty decent way to fill yourself for cheap!