ah, maybe that's the problem. it appears that the queen hilton is available but not the king. one problem i'm having though is that it won't show me the rate for 5 nights. i get the error message "The requested rate is not available. View other available rooms and rates below. Your selected rate is no longer available. Please re-select rooms/rates." So I can't look at the cost to book that room. I guess I could call them to confirm but I have an aversion to calling customer service for hotels and airlines.
Is it normal for the website to not display availability for reservations you don't have enough points for?