Soho House remains my preferred option in NYC, but you need to be a certain sort of person to like it. Great rooftop pool.
What are the rates like at the new Conrad Battery Park for your dates? Still early days so may be cheap(ish) and rooms are huge for NYC.
View from the Wing blog is very positive about the Andaz 5th Avenue and this would let you use your Hyatt status, eg
http://boardingarea.com/blogs/viewfr...l-in-new-york/