Hotel chooses bed type
I guessed it could be the Westin before making the reservation, but it was a bit hard because Hotwire didn't show the exact number of hotel reviews (just "2,000+ reviews") and on the standard rate hotel list, Hotwire doesn't provide the accurate number of reviews (5,003, which changes into 2,617 on clicking the hotel name). The resort fee of USD29 was helpful for the guessing purposes, as there is only one hotel with that rate in Midtown East.
By the way, this hotel is also available on Priceline as a PRICELINE EXPRESS Deal for USD95 for the same date, but the additional fees and taxes charged by Priceline are higher (USD51.98 on Priceline versus 30.97 on Hotwire). On Pricline this is a 4.5 star hotel in the Grand Central Terminal - UN Area, with the following amenities:
No Smoking Rooms/Facilities
The rates are as follows:
$95/night1 King Bed
$297/night1 King Bed + Sofabed - Deluxe Room
$313/night2 Double Beds
$313/night2 Double Beds - Deluxe Room
$336/night1 King Bed + Sofabed - Premium Room
And the following statement appears "Book soon! Someone recently got the Millennium Hilton New York One UN Plaza."
The guest rating and the number of reviews indicate it must be the Westin though.