CityZen
CityZen, web site, 1330 Maryland Avenue SW, Washington, DC, in the Mandarin Oriental Hotel (directions), 202-787-6868, dinner only, and not every day, closed Monday and Tuesday I believe (Metro Trip Planner - opens in new window) [Mobil | Washingtonian | WaPo | City Paper | Don Rockwell | openlist | Gayot]
Don’t forget, all food is ethnic food. For the first time since Jean-Louis (and I mean the mid- to late-1980s, not the later version of the place), Washington has a first-rate place for fine dining. Right now this is one of the ten best restaurants in North America. Yes, dinner costs more than $100 a pop, but now is your chance to go. Go, and go often, before it declines. The fixed-price menu changes every month, make sure you get the full treatment.