Kaz Sushi Bistro, I between 19th & 20th, "nouveau sushi"
Murasaki, Wisconsin and Brandywine, a bit of a trek for you, traditional, nice garden, lots of Japanese Embassy staff
Sakana, P between 20th & 21, small, nice, authentic, just off Dupont Circle, pretty close to you
Sushi-Ko, Wisconsin above Georgetown, just below Calvert, old but still great, good French wine, afterwards walk up the hill and around the National Cathedral, great Gothic, took 100 years to build
Makoto, Macarthur BLVD and U St. - not listed as a sushi specialist, really authentic and expensive Japanese food, great tasting menu, mostly Japanese clientele, furthest from you
See you tomorrow