I'm a woman in my 30s coming to Washington by myself for a 11 days for training. I'll be staying in the Dupont Circle area, mostly because I've stayed in this area before (last time was 1999, though). I love to eat out and won't mind doing so single, should I not find foodie companions in my training class. I'd love to get some recommendations for great restaurants where you can eat well and comfortably -at the bar or at a table. Range is no object- I love gourmet restaurants as much I do "dives"- the only thing that is important to me is that I eat well.