This is a pretty solid Westin. The building is older but maintained really well. If I could, I would give this place a 3.5 star. The amenities are ok, nothing special.
You get most things you'd expect from Westin which is a very comfortable bed, nice linens, and a decent shower. I'm surprised they don't have tubs or a jacuzzi!!!
Even though we had some "issues" with some of the staff I can assure you that the staff here are great.
This place has valet parking only but you can park at the congress centre across the street.
This location is a great hub between Chinatown and the old port. Don't eat breakfast here, it really sucks.
If you're going to stay at 1 Starwoods property in Montreal I'd recommend W by a bit! The Westin would be second though!