You should try Koshu yatai, Maguroya Juwari and the best place is Sobadokoro Rakuichi https://www.tripadvisor.com/Restaurant_Review-g321549-d1997875-Reviews-Koshu_Yatai-Niseko_cho_Abuta_gun_Hokkaido.html https://www.tripadvisor.com/Restaurant_Review-g321549-d3882916-Reviews-Maguroya_Juwari-Niseko_cho_Abuta_gun_Hokkaido.html https://www.tripadvisor.com/Restaurant_Review-g321549-d3605785-Reviews-Sobadokoro_Rakuichi-Niseko_cho_Abuta_gun_Hokkaido.html