As you know everyone has an opinion (right, wrong, etc.). Considering the history of Potomac Yards formerly operated by the RF&P railroad and all the contaminated soil there, why would anyone buy there? Personally I would not live there, and therefore I would not recommend the location to anyone else.
Good luck in your real estate endeavors.
Sincerely yours - Bob Lepelletier - REALTOR, ABR, GRI
Partner - Team Maison at Keller Williams Realy
bob at bobtherealtor dot pro (703) 310-7880