The Tabard Inn has rooms starting at $165, though with no television. It’s sort of a neat place - great restaurant/bar on the first floor, and it’s near Dupont Circle. You can also get a room for $125 if you’re willing to share the bathroom. http://www.tabardinn.com
One thing you’ve absolutely got to do in DC is try Ethiopian food. We have a fairly large Ethiopian community here, and the food scene has benefited greatly from it. I’m partial to Meskerem (in Adams Morgan), but Dukem (on U Street) more often gets the nod for best in the city proper.
A few thoughts:
1.) I see that you’re in NYC. I prefer our Metro system to yours in many ways (cleaner, better architecture, stations are more sensibly designed) - but this isn’t a 24-hour-system. It stops running around midnight Sunday-Thursday, and around 3 AM on Friday and Saturday nights. If you’re out late, take note of the posted departure times for the last trains from your nearest station. Also, be aware that late-night connections can complicate things further; if you’re staying in Dupont Circle (Red Line), and you’re drinking on U Street (Green Line), you
might catch the last train to Chinatown (Red Line Transfer), but miss the last Red Line towards Shady Grove (which also stops at Dupont). That said, I haven’t had this happen that often, especially since the last train of the night is usually delayed. Besides:
2.) DC just isn’t that big, especially the bits you’re likely to be hanging out in; it’s only an hour’s leisurely walk from the Mall to Dupont Circle, for example. And the Dupont Circle/Adams Morgan/U Street nightlife strips are all within a 20-30 minute walk of one another. This is especially important when one recalls that the Adams Morgan strip is a decent walk from the Metro station, and Dupont and U Street are on different lines; it usually makes more sense to just walk between these three places than to wait for a train. (Though, honestly, you probably should avoid Adams Morgan; the Madam’s Organ blues bar is fun, but the place is mostly college kids).
3.) You know Gothamist, right? DC has our own version - DCist, run by the same company. www.dcist.com. They have pretty good nightly coverage of fun events, with end-of-week “About this Weekend” posts as well. It’s a fine resource if you want to take in some of our (genuinely excellent) local art and music.
4.) If you’re going to be here on Thursday and Friday during the day, consider taking in a lecture at one of our many fine think-tanks.
It’s great fun, a very Washingtonian experience, and there’s often free food and drink. www.linktank.com is a fine scheduling resource. I’m especially partial to lectures at conservative shops, like Heritage or AEI - always fun to hear the other side’s thoughts raw.