Capitol Corner was such a great spot for our family's visit to DC. In addition to being easily walkable (about 3-4 blocks from union station), it was an easy walk to a couple restaurants, Circulator bus stops, and Karen & Matt also provided Metro Smart Trip cards which we easily added some $$ to for our rides on the metro -- this simple though saved us from buying a card per person in our family, just a very thoughtful step to take as a host.
We had a great stay! Thanks!