Qantas was running out of room at its large domestic terminal in Sydney and needed to come up with something new to reduce frequent backups at counters.
At the airport, the completion of the 272-room Montreal Airport Marriott in 2009 atop the US departure terminal means the transfer time from bed to check-in desk can be less than two minutes.
Here they have one Galleries Lounge for business, the First lounge for First, and just to confuse things, only in Terminal 5 (there are also lounges in 1 and 3) they have the Concorde Room, also for First class passengers, with hotel-style rooms featuring beds and en suite bathrooms, plus restaurant-style dining.