{{Bev}} It's a good thing you've got this chance to rest. Peace.
omnis, if your hotel in Bethesda is convenient to the metro you probably don't need to move to a more expensive DC location. Bethesda to downtown takes about 15 minutes on the train, and costs less than $3 each way (actual price depends on time of day).
I'm excited because the Smithsonian Museum of American History is re-opening this weekend after being closed for a couple of years.