"Given the distance and traffic congestion between Montreal and the Montreal Airport, having a hotel inside the Terminal for an early flight is something to consider. Also, remember to request a room, if available that faces away from the major construction happening at the airport.
Everything about our experience exceeded expectations (OK the hot-tub was down for maintenance but not a deal breaker). The staff were outstanding and I'd like to recognize the night desk agent on May 13th, Gerardo who responded "above and beyond" when my companion's flight was cancelled (what a relief after the non-existent customer service of British Airlines in dealing with their stranded passengers).
The 4th floor bar/restaurant is a welcome haven and there's no question I'd book again when my travels take me to Montreal."