I went to this restaurant with a Japanese friend. The place was full, but I was the only westerner - a good sign. The exterior is a little daunting, with its slatted windows, but this is part of the authentic presentation also reflected in the menu, which is quite extensive, and has several dishes I haven't seen at other Japanese restaurants in the UK. We ordered edamame, sashimi, deep-fried tofu, miso soup, and vegetable tempura, and we thought that the food was very fresh, tasty, authentic and well-presented. The sashimi in particular was some of the freshest I have tasted in London. Service was prompt and polite. The atmosphere is just like a traditional izakaya in Japan, with old enka ballads as musical background. Highly recommended!