Budget
Taft Bridge Inn
100 year old mansion located in quiet neighborhood. Rooms include breakfast each morning. Private baths and shared baths available.
D.C. Hostel
If you'd like to stay right in the center of the coolest street in D.C., this is your hostel. It's very noisy, of course. Lots of international students.
Adams Inn
Inexpensive and international, Adams Inn is not a bad place to spend a few nights. A few cautions: shared bathrooms unless you pay extra, few amenities no TV, etc., and breakfast never changes.
American Guesthouse B&B
It's hard not to like this place, with its beautiful rooms in an Adams Morgan 1880s Mansion. Double check that you are OK with the size of your room, though, as a couple towards the low end of the price-range are very small.
Hilton Washington
The 1,070-room luxury hotel, with a great location near both Dupont Circle and Adams Morgan, underwent a $150 million restoration in 2010. It is famous as the place where former President Ronald Reagan was shot by John Hinckley, Jr.