Depends on what you wanna spend and your lifestyle. If you are 35 or under these are for you...
If your budget is $150 or under go to Priceline.com and cross your fingers. They usually come through.
If you are in the $150 to $200 range check out The Hudson
www.ianschragerhotels.com or The Time
www.thetimeny.com
If you are doing anything over $200 check out The W hotels in this order The W Times Square, The W Union Square, The W The Court or The W Tuscany. All have extremely hot bars inside of them.
Still, they don't beat the ambiance of The Hudson, that should be your first choice. There are specials on the website.