Another post has appeared since I first looked, but originally I saw this...
Here's an ad currently in Craigslist. Don't know how long it will be available for. The location is very close to the heart of the city. You could either get the metro or walk to the Mall...
Clean and spacious 1 bedroom apartment for sublet for inauguration in the historic U street district. Minutes from the green/yellow line metro (allows easy access to and from DCA as well as to the Capitol). Walking distance to capitol, downtown, dupont circle, adam's morgan and more.
$1500 per night, 2 night minimum (apartment is available as long as you'd like). Will supply clean sheets and towels, stocked fridge and more. Apartment has cable television and internet, building has gym and laundry.
50% deposit required to hold and remainder paid on move in, plus asking one nights rent as security deposit.
new hampshire nw at 15 st nw
More info is HERE