For what it is, this place gets a full 5 stars. It's a bakery that sells hot buns, dessert buns, and pastries/cakes for cheap. While there have been a few misses for me, there haven't been enough for me to write this place off or take a star away from it.
If you're near guy concordia metro early in the morning (before 10), you'll be lucky enough to find their signature coconut bun. If you're there for 830ish, you'll also get em' hot! These typically sell out quickly because it's one of their best breakfast buns that's also less than 2$.
Cocobun opened for my last two years at Concordia and I can't tell you how many times I would stop here for a quick lunch or snack. For less than 5$, I could get 2 hot buns and a dessert bun. If you're hungry and buy six buns, there's also no tax.
Solid choice for those looking for a snack or quick bite. They're also easy to hide in your pocket if headed to the SGW library ;)