I wouldn't use PRICELINE or HOTWIRE unless I was comfortable getting ANY hotel in whatever zones I bid. I've stayed at the Hudson before and your parents should be fine there.
That's not a very strategic way to bid. You may as well start bid for 3* because it would be extremely rare to get a 4* bid accepted for $75 (if ever in the spring).
Started at $120 MTW, new bid with MTE at $120, added MTW at $130, added UM-CPS $140, MTS $150, UES $160, UWS $170 and was accepted at the Hilton Towers NYC.
By the way, I found this site after getting it and hate I missed the $10.00 off code, but if you have a link I can use in the future to help out, I'd be glad to use it.
I had been bidding on Priceline for the past few weeks and had bid up to $180 without luck. I saw this on Hotwire tonight and jumped on it (after trying up to $115 on Priceline). $112 per night, with taxes and fees it came to $395.95 I have the Beekman Towers booked through quikbook.com ($199) for June 21. I'm hoping hotwire or priceline will open some availability in the next couple of days.