Calm atmosphere, very attentive service, reasonable prices, and a large (but not overwhelming) menu.
The tempura was excellent, as were the mackerel and tuna sushi. The kimchi and tsukemono are delicious and well worth trying, although probably not the best choice if you don't like garlic!
Edokko is a charming little restaurant serving a variety of Japanese dishes, with friendly staff playing an important role in the popularity of this place. They can cater for private parties of up to 18 people downstairs. They provide a takeaway service for sushi and sushimi.