I lived in Montreal for 3 years and once I found it this became my favourite restaurant.
Great food, and a pretty nice menu (lots of good options done in interesting ways). Sounds weird, but this has the best Caesar Salad I've ever had. Just beautiful.
Also very comfortable there. White table cloth, 3 dining areas (street level, downstairs, and upstairs, but still very open feeling. Great servers too. They know their stuff, are all french first, but are either fluent in english, or make a great effort to speak english (which is even better in my opinion) .
I typically eat for free for work, and I'll take L'Aromate over Montreal's high end steak houses any day.