A better place for steaks is
Ray's the Steaks on Wilson Blvd. in Arlington. If you're coming from DCA it's convenient to Metro, too, being about midway between the Rosslyn and Courthouse stations. (Downhill from Courthouse, uphill from Rosslyn).
If you don't want a steak,
Ray's Hell-Burger (same block as Ray's the Steaks, same owner) makes an amazing hamburger. The address is 1713 Wilson Blvd. I mention the street number because there's no signage out front.