I plugged in Aug 15 - Sept 30 and got $59 for the Courtyard Silver Springs (9 miles from Bethesda) and a AAA rate of $71 at the full service Fairfax Marriott at Fair Oaks.

Make sure that you ask for the Platinum challenge from Marriott Cust Service before you stay. You will get concierge lounge access and a bundle of points. I figured about 49,000 points, and you may qualify for the summer promotion for another 45,000 points, depending when you start your stay.

Look for Marriott RewardsŪ Unexpected Bonus.

If your budget and commute allow, stay in Fairfax.