To follow up on the FQE query, I've stayed here a number of times and can give you some info.
It's a large hotel, over 1000 rooms I think, so the lobby/ elevators can get VERY busy. Having said that, check in is reasonably efficient and I've found the staff pleasant and responsive. The Fairmont rooms are pleasantly decorated and perfectly comfortable, but are pretty small/ cozy, and the bathrooms are tiny (like most of the 'historic' properties, even though this one isn't that old). I've sometimes been upgraded to a corner room, which is considerably more spacious. Some have pretty good views, others are not much to speak of. Beware rooms facing 'the mountain'/ Rene Levesque Blvd if traffic noise bothers you. Nice view of the mountain, but NOISY from the road! I stayed on the Gold Floor once, not much difference in the room that I noticed - higher bed, fancier bedspread, etc - but the hors d'ouevres and the breakfast offerings were fantastic, and the lounge view is wonderful.
The pool/ gym here is terrific - one of the best hotel gyms I've come across anywhere. Large and very well equipped. I've not eaten in the Beaver Club, I've had Sun brunch in the Montrealais, and it's good, perhaps even very good, but not quite...spectacular like say the Sun brunch at the Banff Springs, or Chateau Laurier - it also doesn't get underway till 1130! (Montreal stays up & gets up late!).
Parking is a total hassle & complete disaster here. It's not run by the hotel but by some other company I believe. Disorganized, cramped, they ALWAYS mess up the billing, and it's expensive, too. If you can do without a car, do! (Not to mention if you're not a Montreal native, driving can be an...experience - there's a REASON they love F1 there!). The train station is directly beneath the hotel, great access. Or if you're flying there's an airport bus I believe. Also, you can access the underground shopping, metro, etc, without going outside, a big plus in the winter!
If you're a Starbucks addict...shameful, I know

- the nearest is Chapters on St Catherine (going outside), or down through the train station towards Bonaventure hotel (underground, ask the hotel staff for more detailed directions.)
Hope this helps, and you enjoy your stay in Montreal - I realize in re-reading this may not sound like a great review, but this is one of my favourite Montreal hotels and I keep returning!