L'Atelier d'Argentine can best be described as trendy and upscale. It's located in the Old Port. I did find the noise level a little high making conversation difficult but I did enjoy my meal here and would want to go back again. The menu is very meat-centric which is expected for an Argentinian restaurant and they know how to cook it well here.
We started with grilled chorizo sausage which was well-seasoned and had been properly grilled so it had that good, charred taste to it. To follow it up I had the braised pork belly which had what I believe might have been a balsamic reduction. The meat was a little drier than expected given how it had been braised. That being said their was a layer of fat on the cut of meat which had been seared so that it was really crispy and I did enjoy that. To finish it off I had panqueques which was a dulce de leche crepe stuffed with a sugar burnt banana and milk semifreddo on the side. The dessert wasn't too sweet and thoroughly enjoyable.
The service here is also worth mentioning. I found it better than most places. Our waitress was very attentive, checking back on us frequently and the sommelier was friendly making conversation and everything. This isn't something you always get here in Montreal and it is very appreciated. Anyways given my experience at this restaurant I would recommend this place to anyone.