See posts 105 through 109. Recently someone got a rate of well under $200 there through an LNF.

Unfortunately, that may be exaclty what caused your search a while later for LNF to fail. My experience is that once someone succeeds at an LNF, it's likely (though not certain) that the hotel will act to remove that rate (from the hird-party site) for a while, at least until "memory fades".

Meanwhile, I see that you're PC Plat. You do realize that there are several NYC hotels which are available starting for as little as 15k PC points a night? (As a PC Plat with lots of points myself, NYC is one place I never both paying money to stay at.)