Personally I really like the Int’l MLL at YUL. Agree that it’s better than most UC (maybe not LAX), but the bar is great and the views from the mezzanine level are pretty cool.
I’ll be keen to hear the OPs experience. They’ll have plenty of time in the lounge as AC812/27JUN is posting a delay of 02h45.
The inbound aircraft (C-GEGI) posted an even heavier delay out of YYC … then took 39 mins to find a gate at YUL. Crazy.