We are flying INTO Dulles because we close out the trip in Reston with a free shuttle to airport. But we are starting the trip in Washington DC. What is the easiest and most cost effective way to get from Dulles to probably an apartment near the Capitol building (haven't quite decided which apartment yet so can't give an exact address.)
Very accustomed to switching from bus to train/metro and walking several blocks rolling the luggage. Lots of European travel.