Went to Le Serpent in Dec 2014 for office xmas dinner. It's a cool place with industrial look. Make sure you look for the small sign outside, otherwise you might end up passing by it. Not cool when the city is in the middle of a snow storm ( *wink wink)
Food is good, pretty diverse for this kind of restaurant, however I found portions to be pretty small. $30 for 2 medium size veal medallions as main dish..meh. I find it expensive if you get just the main dish without entree + appetizer.
Service was good, can't complain. Overall a good place, but not the kind of restaurant where you want to go with an empty stomach unless you're ready to dish out 50-60$ for entree, appetizer and main dish. Not impressed. Fancy