Take the tram slowly to Yunokawa Onsen Station and check into the Kaiyo-tei Hotel in Heiseikan. Tomorrow we'll be leaving Hakodate; it's just a 10-minute bus ride from the hotel entrance to the airport.
Yunokawa Onsen boasts a 400-year history, and legend has it that it's been a place where villagers and travelers have traditionally sought healing and relaxation. During the late Edo period, former Shogunate soldiers like Enomoto Takeaki and Shikata Toshizo came to the hot springs to bathe and heal their wounds during the Battle of Hakodate.
Kaiyo-tei is a very large restaurant with both red and clear hot springs, both saline springs. It's very comfortable, and the salt content has a slight antibacterial effect.
Dinner will be at Shiosō-tei across the street, a buffet; both the window views and the food are beautiful.