The scene when the hitmen (led by Anthony Wong Chau-sang) follow their target to a hotel seems to be an amalgam of two hotels. The lobby and lift scenes were filmed at the Royal View Hotel in Ting Kau. Of course in the film this is still supposed to be Macau. I'd never heard of this place until today and had no idea there was even a hotel there! It's located on the mainland side of the Ting Kau bridge that connects Tsing Yi with Tsuen Wan side.
The later scenes of the hit and where Hallyday's character inadvertently witnesses it will be covered in the next post.