In February, I booked three separate nights at this hotel over one weekend. The reason for that is, I may leave New York early and head up to Connecticut. It was just to have maximum flexibility in case plans change (the flexible rate was $121, with taxes $143 - still an excellent price for New York City).
I managed to book a flexible rate for the 1st and 3rd nights, but the 2nd night booked into a more expensive rate. I'm not quite sure what will happen at check in. It seems a bit pointless changing rooms for one night, but maybe there will be the offer of an upgrade in the email they send out a week or so before the stay.