Booked standard king room, pre-upgraded one day ahead to 'executive king room' - when enquiring at check-in I was told that the room assigned did not show to the side I prefer (i.e. less traffic noise). Assigned to another room showing to the more quiet side.
Whenever in that room I looked down the floor plan and found out that the room I rejected was a Junior Suite, my actual room was not (although quite big in size and meeting my needs very well)