My wife and I tried Chez Mama-San tonight. Highly recommended. Former owners of Japan Inn closed it and opened this in Georgetown.
In a sentence: What do you do if you introduced sushi to the capital, but it's become available at every supermarket? Reinvent yourself as an upscale Japanese "comfort food" joint.
Terrific food -- no raw fish though. It's all the type that has a Japanese name meaning Japanese interpretations of Western cuisine. So it's a weird fusion/cross-over -- Japanese interpretations of Western cuisine brought back to the United States! But very good -- top-quality ingredients, amazing skill, and merely expensive rather than outrageously expensive (cheaper than Japan Inn if you remember their menu). All in all, a place we'll go again. I had the pork confit and my wife, Carol, had the cod. The shrimp/scallop gratin appetizer was delicious. The ice cream was homemade and a wonderful finish: green tea, black sesame, and yuzu.
Attentive service. It's a small place, seating 58 people on two floors.
Very nice decor. Asian aesthetic. Small chairs, small tables, everything maybe 85% of the size you'd find elsewhere.
In any event, this is a great addition to the restaurant scene in Washington, D.C.