It's no destination restaurant like Pho Tay Ho on Beaubien/St-Denis. This is the place we first tried because 1) I felt like Vietnamese and 2) I wanted it now. I don't know many places that could mess up the beef/rice combo. The Pho is another story. Luckily, this place that opened just a few blocks from my place does both good enough. Fleury has too many Vietnamese restaurants (La Citronelle, Les Petites Baguettes, Sushi Sama) within a few blocks. Having tried all, I could safely say that this is your safest bet.
4* for proximity and taste. If you don't live in Ahuntsic, I wouldn't bother going as I'm sure your neighborhood has a legit Vietnamese joint.