This probably has been asked and answered...forty yr. old couple flying in to BWI on May 11th and taking the train to D.C. Would like to stay in an area for touring (under $200.) for 2 days, and then we are training back to BWI on the evening of May 13th, staying at the Embassy more than likely as it is in the airport, so we can fly out the next morning. First visit.
If we stay around the train station, we would be able to leave our bag while we tour for the day before leaving that evening. If we are out of the area, we would need to metro in to tour, metro back to get bags, then get to the train station.
Does this make sense?