This hotel is by far the best hotel I've stayed at in Montreal. I sometimes make the mistake of staying somewhere else and I can honestly say I've checked out of those other hotels and checked into le crystal- even at 8 am no problem.
Most hotels/ some hotels are just generally rude or unhelpful, with this hotel you feel like your actually staying away and feeling comfortable. This is the only hotel I will stay at in Montreal for years to come. Perfect sized, no hall noise, do not disturb means do not disturb here, they are also a green friendly hotel. I suggest you stay!