Koshikawa Onsen

The other day we visited Koshikawa Onsen, a tiny, old building along the 244 leading to the south-east out of Shari, Hokkaido. It is an unmanned onsen and you pay the 200 yen fee by putting the coins in a box. It seems the be mainly frequented by locals and travellers who have heard of the place. The building looks a bit run-down but the bath is nice and the water is hot.

Koshikawa Onsen

I do treasure these tiny onsen as anybody can go to the big baths of Yufuin or Hakone, but in my romantic view this is much closer to the way onsen were used in the past before it was all about the souvenirs or the drinks. There are still the leftovers of a much older Japan out there for those who bother to look.

Seni Onsen Iwanoyu

If you know us, you know that we like to visit onsen on our trips to Japan. Our favourite onsen resorts include Naruko Onsen, Nyuutou Onsen and of course Hanamaki. We’re clearly more into the rustic and smaller onsen of Northern Honshu than the larger pools in the south.

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And this year we can add Seni Onsen to this list. Iwanoyu at Seni Onsen is keeping a bit of a low profile on the Internet without an own home page but regardless of that, it is doing very well as you need to make reservations months in advance, often long before you are able to buy a ticket for your trip.  Robert Neff, in his book Japan’s Hidden Hot Springs has it listed as the best onsen in Japan. We booked late and only the best rooms were available so we decided to splurge and enjoy the full luxury that this ryokan has to offer which was a lot!

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Normally, at a ryokan you have a tatami room in which at night the futons are spread to sleep in. This time we had several rooms “en suite” and a private garden. The dinner was a long series of delicious courses often made of local produce, breakfast was pretty good too.

Dinner menu from the day we visited, delicious!
Dinner menu from the day we visited, delicious!

But the most impressive thing were the baths. The main bath is a cave dug into the rock that meanders left and right and you have to climb up for waterfalls to get to the depths of it. It has a bit of an Indiana Jones feeling to it. At the same entrance there are several other baths including an outside bath. These are the baths that you share with the other guests. Some are gender separated but the cave bath is mixed and you had to wear special shorts and a cover for modesty. Furthermore there are several private baths with an inside bath with jacuzzi and an outside bath. When you get in, you lock the door so you and your family can enjoy the bath in private.

The service, everything was immaculate and we’re already planning our next visit in two years time 🙂