It must be the "basic" or "standard room". Some in the chain allow larger rooms with different features like breakfast, robes, view, etc. to be booked with gold points, typically 70-75k, but I don't think it's required. Thus, once the hotel sells all the basic rooms, gold points or otherwise, it need not make any other award rooms available. In looking at this hotel, it appears that it does have standard rooms and some of these "upgraded rooms"(yes, sometimes there is not much difference in the "upgraded room" must watch out for this) at various times. When looking at paid rooms, it has classic and deluxe on days that rooms are bookable with points, but only deluxe rooms when I see higher point requirements, higher cash portions on cash +points stays, etc. When looking at your dates on paid states, neither classic nor deluxe is available on the first day and the hotel is not offering the higher class rooms for gold points bookings, which is fairly typical IME.