What time of year, or, better yet, what specific dates? D.C. rates are very volatile. Hit it right and they can be dirt cheap, and in those instances I'd never advise anyone to redeem. So please just ensure that no matter what you have shopped cash rates. That, combined with your points/cash budget, also really dictates where you would want to stay. If it's an expensive time of year, then the Alexandria and DCA/Crystal City properties are very good options. If not, then you may as well stay downtown. The most relevant question is - how much do you want to pay?