Sometimes the Marriott Eastside offers very reasonable rates this time of year... if you have AAA they offer a discount. Also try The U.N. Plaza Millenium - its a great hotel on 1st and 44th and they always have good rates. Good Luck.
Okay, as of now we have it narrowed down to the Bentley Hotel and Marriott Courtyard East. We're definitely leaning towards Marriott because it's closer to where I'll be moving my belongings into on move-in day.