Visiting in the Summer 2016 I recall finding this place a bit by accident. We were shopping in downtown Montreal then the skies decided to open up and rain down upon us so we were like oh quick.. a diner.. that will do for lunch! But it turned out be a bit more "elevated" than the diners we are used to back in the States. I came in feeling under dressed seeing other business types around, but still was comfortable - it wasn't an issue.
We started off with some delicious and beautiful looking trio of mini-lobster rolls. They were really tasty and generously filled with hunks of lobster meat. For our mains we went with Deville Nacho salad which was really fresh and the rotisserie chicken was some of the most juicy & tender I ever tried. We also did the Blue cheese Iceberg that was also very good.
Our first visit was a 5 star surprise - excellent food and service across the board. So much so that we decided to go back a second time later that week when we found ourselves in the area and hungry. That visit was not too memorable. The burger I ordered was way overcooked - "well done" and a bit on the dry side. I don't remember what else we ordered - perhaps I blocked out this experience preferring to remember Deville in the best possible light of our first meeting!
UPDATE 1/5/17:
As you can see from Annie N, Business Manager's comment to my review they take much care and attention to detail with their restaurant! I am sure they would have corrected the issue I had on my second visit, but I am not one to send food back and waste it (unless its a serious issue such as being raw or spoiled). Deville is great spot that I recommend when in Downtown Montreal.