Originally Posted by
3Cforme
SPG free night awards can be a subset of the 'base' room type even at full SPG properties. Not all rooms of the base type must be available for standard free night awards. SPG does not as a practice identify the base room type nor count of eligible rooms.
Sometimes room inventory gets improperly allocated. But overall, availability of rooms for purchase isn't meaningful for award redemption.
I don't believe this is correct FWIW - if a base room is for sale, it is available for redemption, case closed (per program T&Cs).
There is no "subset" dedicated for award rooms.