I have made a 3-nights award reservation (full points) at Sheraton Lisboa.
I have since changed my plans, and want to convert that to a 1-night reservation, but the system won't let me... how is that possible?
For my last night (the one I want to keep), spg.com says they only have club rooms available... well, I have already booked a deluxe for that night and I want keep it, so at least that room should be available!