≪The first in the industry≫Hot spring report with spring quality chart！On-site interviews at real hot spring inns, stories of actual bathing experiences, detailed explanations of the power of each type of hot spring.

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Private open-air baths（33 inns）

Hokkaido＞Central Hokkaido＞Otaru Asarigawa Onsen

OTARU KOURAKUEN

A popular ryokan with a large Japanese garden and 28 guest rooms with open-air baths

1 night/2 meals: From 22,310 yen
Day trip: From 2,000 yen

Tohoku＞Fukushima＞Higashiyama Onsen

Shousuke-no-Yado Takinoyu

A hot spring inn loved by Shosuke Ohara, surrounded by the sound of waterfalls in Aizu

1 night/2 meals: From 9,850 yen
Day trip: From 1,000 yen

Tohoku＞Miyagi＞Higashi Naruko Onsen

Ryokan Onuma (Onuma-no-Yu)

A hot-spring cure inn where the passion for using hot water, passed down through five generations, can be felt

1 night/2 meals: From 9,390 yen
Day trip: From 500 yen

Tohoku＞Miyagi＞Higashi Naruko Onsen

Ryokan Onuma (Karatake-no-Yu)

A hot-spring cure inn where the passion for using hot water, passed down through five generations, can be felt

1 night/2 meals: From 9,390 yen
Day trip: From 500 yen

Tohoku＞Yamagata＞Kaminoyama Onsen

ARIMAKAN

Panaroma open-air baths, 5 private baths, and in-room meals are available at this hot spring ryokan

1 night/2 meals: From 14,300 yen
Day trip: From - yen

Tohoku＞Yamagata＞Kaminoyama Onsen

Saikatei-Jidaiya

A colorful and nostalgic Japanese space, an inn that awakens the spirit of the old days

1 night/2 meals: From 13,650 yen
Day trip: From - yen

Kanto＞Kanagawa＞ Hakone Yumoto Onsen

Hakone Kamon

A castle-style hot spring inn with a reputation for its private source of hot spring baths and gourmet cuisine

1 night/2 meals: From 24,750 yen
Day trip: From 2,750 yen

Kanto＞Kanagawa＞Hakone Tonosawa Onsen

Kansuiro Ryokan

Hakone's hot spring culture and history live on at this registered tangible cultural property

1 night/2 meals: From 29,700 yen
Day trip: From - yen

Kanto＞Kanagawa＞Hakone Miyonashita Onsen

HAKONE-GINYU

Guestrooms with an open-air view overlooking the Hakone mountain range

1 night/2 meals: From 42,500 yen
Day trip: From - yen

Kanto＞Tochigi＞Yunishigawa Onsen

Kamiyashiki Taira-no-Takafusa

A hidden hot spring inn of a “Heike-no-Ochudo (Heike fugitives)” with Irori (sunken hearth) cuisine

1 night/2 meals: From 14,450 yen
Day trip: From - yen

Kanto＞Tochigi＞Nasukogen Onsen

Wakaki Ryokan

A small hot-spring inn with a high quality and artistic atmosphere

1 night/2 meals: From 20,600 yen
Day trip: From - yen

Kanto＞Tochigi＞Shiobara Onsen

Keiunkaku

An inn with cloudy hot spring water at the foot of sulfur mountain

1 night/2 meals: From 16,500 yen
Day trip: From 1,100 yen

Kanto＞Gunma＞Shima Onsen

Shojukan

Long-established inn popular for its two private hot spring sources and free private baths

1 night/2 meals: From 14,450 yen
Day trip: From - yen

Kanto＞Gunma＞Tanigawa Onsen

Ryokan Tanigawa

Gentle free-flowing hot spring water relieves stress and beautifies the skin

1 night/2 meals: From 22,700 yen
Day trip: From 1,500 yen

Kanto region＞Gunma prefecture＞Tanigawa Onsen

Bettei Senjuan

Luxurious onsen ryokan with open-air baths in all guest rooms

1 night/2 meals: From 48,550 yen
Day trip: From ‐ yen

Kanto＞Gunma＞Tanigawa Onsen

Minakami Sanso

5-star hot spring! Natural free-flowing hot spring water with no added water and no circulation

1 night/2 meals: From 20,900 yen
Day trip: From - yen

Chubu＞Nagano＞Norikura Kogen Onsen

Sansuikan Shinano

A hot spring inn on a plateau where you can experience the sulfur spring gushing from Mt. Norikuradake

1 night/2 meals: From 15,950 yen
Day trip: From - yen

Chubu＞Shizuoka＞Toi Onsen

Toi Fujiya Hotel

Wisteria blooming on the seaside

1 night/2 meals: From 14,300 yen
Day trip: From 1,500 yen

Chubu＞Shizuoka＞Kannon Onsen

Kannon Onsen

The Togenkyo of Oku-Izu, where miraculous strong alkaline hot spring water is gushing out

1 night/2 meals: From 21,050 yen
Day trip: From 1,300 yen

chubu＞niigata＞tochiomata

Jizaikan

Detoxify and relieve stress with a 400-year-old “lukewarm long bath” at this radium spring that revitalizes cells and is also effective against gout//www.onsen-k.com/data/niigata/jizaikan/

1 night/2 meals: From - yen
Day trip: From nor yen

Chubu＞Niigata＞Echigo-Nagano Onsen

Rankeisou

Niigata Prefecture's hidden hot spring, the one-house inn of a mountain stream

1 night/2 meals: From 18,700 yen
Day trip: From 1,000 yen

Chubu＞Niigata＞Yahiko Onsen

Oyado Dairoku

Pure Japanese-style inn with tatami mats built in the gate town of Yahiko Shrine, famous for the largest torii gate in Echigo

1 night/2 meals: From 13,000 yen
Day trip: From - yen

Chubu＞Niigata＞Sakihana Onsen

Satorikan

Hot spring for beautiful skin and a spectacular view of the Agano River

1 night/2 meals: From 16,500 yen
Day trip: From 6,850 yen

Kinki＞ Hyougo＞Arima Onsen

Taketoritei Maruyama

A hot-spring inn with an elegant atmosphere where you can experience two of Arima's famous hot springs, Kin-sen (gold spring) and Gin-sen (silver spring)

1 night/2 meals: From 32,500 yen
Day trip: From - yen

Kyushu＞Nagasaki＞Unzen Onsen

Unzen Fukudaya / Yama Terrace Bettei

Excellent cloudy free-flowing hot spring water

1 night/2 meals: From 17,050 yen
Day trip: From 1,000 yen

Kyushu＞Kumamoto＞Amakusa Matsushima Onsen

Tenshi-no-Hashigo

High quality adult holiday in Amakusa, suite with open-air bath overlooking the sea

1 night/2 meals: From 36,300 yen
Day trip: From 3,000 yen

Kyushu＞Kumamoto＞Kurokawa Onsen

Fumoto Ryokan

Ryokan inn with an abundance of open-air baths, private baths, and guest room open-air baths

1 night/2 meals: From 23,100 yen
Day trip: From 1,500 yen

Kyushu＞Kumamoto＞Kurokawa Onsen

Ryokan Kounoyu

All rooms have an open-air bath with free-flowing hot spring water

1 night/2 meals: From 33,000 yen
Day trip: From 1,500 yen

Kyushu＞Oiita＞Nagayu Onsen

Daimaru Ryokan

An inn with a pure carbonate spring loved by the literati having the Lamune onsen as an outside hot spring

1 night/2 meals: From 14,010 yen
Day trip: From 1,500 yen

Kyushu＞Oita＞Sujiyu Onsen

Yamaai-no-Yado KIYASUYA

A hot spring ryokan with open-air baths in all rooms

1 night/2 meals: From 22,000 yen
Day trip: From ‐ yen

Kyushu＞Oita＞Yufuin Onsen

Soan Kosumosu

An inn with exquisite Creative Kaiseki cuisine with a hot spring for beautiful skin and an open-air bath room

1 night/2 meals: From 36,495 yen
Day trip: From - yen

Kyushu＞Kagoshima＞Shibi Onsen

Shiki-no-Mori Shibian

A hidden inn with only 6 rooms, all detached/ The water in the room is free-flowing hot spring water and of excellent quality

1 night/2 meals: From 33,000 yen
Day trip: From - yen