Raku has been around for years and I think it just gets better. In the summer, there is wonderful outdoor seating on Woodmont Avenue under a crown of trees. In the winter, a steaming huge bowl of noodle soup - my favorite. The sushi is very good but for a better selection, I would go to Sushi-ok.
Start with the seaweed salad, a bowl of miso soup, some great maki rolls and then to the vegetable don buri soup. Great food at very inexpensive prices for Bethesda.
Try the sesame ice cream - it is the best way to finish off a wonderful meal.