Every program I've belonged to has had such restrictions. None of them gave run of the house upgrades. Some go out of their way to allow properties to name their suites that don't match what the program calls for. Gets to be a crap shoot trying to figure out what you can expect.
Asking nicely is the best approach, if they refuse then move on. If the room is still available when you arrive then doing a point upgrade may be a cheap way to get what you want.