Kaiten Sushi Hakodate Marukatsu Suisan Main Branch
Located just a short walk from JR Hakodate Station inside the Hakodate Bay Gourmet Club, a dining complex in the bay area, this conveyor-belt sushi restaurant is operated directly by a long-established fishmonger.
The prices aren't exactly cheap, but considering the level of freshness you get in Hokkaido, it's pretty reasonable. The atmosphere is lively—feels more like you're here for seafood than just sushi. Everything is really fresh, so I definitely recommend giving it a try!