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Asan Kotonami

湯山荘 阿讃琴南ゆざんそうあさんことなみ

A mountain-valley ryokan on its own hot-spring source

Lodging
Shikoku·Kagawa

Day Use

Yes

A temporary closure for renovation is planned from February 2027; details haven't been announced yet.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Sauna room of any kind

Bathing Arrangements

Private BathYes

A private bath you can reserve for yourself or your group

Day-Use Private BathNo

Day visitors can book the private bath, not only overnight guests

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

KidsYes

Welcomes children and families

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

ParkingYes

On-site or nearby parking available

Views

Mountains
Forest
River
Waterfall

Highlights

Foot Bath
Ganbanyoku
Lukewarm Bath

About

Asan Kotonami draws its own hot-spring water into several baths: an indoor bath, a riverside open-air bath with rock tubs, a deep bath and a low reclining soak, plus a sauna. A foot bath by the entrance uses the same water, and two private open-air baths, one with a sauna and one with a heated stone chair, are available separately. Six of the main building's room types also have their own open-air onsen bath. The ryokan sits in a wooded river valley in the Kagawa mountains, close enough to a waterfall that you can hear it from the bath, and the main bathing area swaps between men and women through the day.

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Onsen Oni

Last updated September 29, 2026