There is a blue line metro stop at DCA(don't take the yellow). It is up in the North end, near US.

The Blue Line has a stop two & 1/2 blocks either side of the St. Regis. farrigut or mepherson. very quick trip.

I have only taken the metro 3 times, so check my facts.

Regarding food. The St Regis Restaurant has undergone a very turbulent 5 years or so. Only the prices have not changed. If it is open(it was closed for the better part of a year), I have heard nothing about it.

There is a 4 points a few blocks east. The restaurant Corduroy is very good(probably the best in any 4 points) and close to most of the best in DC.