≪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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Open-air bath in guest rooms（23 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 16,000 yen
Day trip: From 2,000 yen

東北地方＞福島県＞岳

お宿花かんざし

単純酸性泉と絶品の料理を味わえる大正ロマン漂う全8室の小さな湯宿

1 night/2 meals: From 18,900 yen
Day trip: From - yen

東北地方＞山形県＞小野川

小野川温泉河鹿荘

マイナスイオン豊富な極上の温泉100％かけ流しと絶品の米沢牛を味わう湯宿

1 night/2 meals: From 15,225 yen
Day trip: From 500 yen

関東地方＞神奈川県＞箱根・湯本

箱根花紋

自家源泉の湯巡りと美食が評判の城郭風湯宿

1 night/2 meals: From 23,500 yen
Day trip: From 1,800 yen

Kanto region＞Kanagawa prefecture＞Hakone/Miyonashita Onsen

HAKONE-GINYU

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

1 night/2 meals: From 29,000 yen
Day trip: From - yen

関東地方＞群馬県＞伊香保

千明仁泉亭

創業500年時代の息吹が薫る宿

1 night/2 meals: From 16,800 yen
Day trip: From - 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 41,730 yen
Day trip: From ‐ yen

関東地方＞群馬県＞谷川

檜の宿　水上山荘

温泉5つ星取得！加水せず循環しない源泉かけ流し。

1 night/2 meals: From 19,000 yen
Day trip: From - yen

中部地方＞長野県＞上諏訪

上諏訪温泉しんゆ

神秘的な諏訪湖を眺めながらの湯浴みは癒やしのひと時

1 night/2 meals: From 16,720 yen
Day trip: From - yen

中部地方＞静岡県＞西伊豆戸田

海のほてるいさば

海に浮かぶ富士山と美しい夕日を望む絶景の宿

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

中部地方＞新潟県＞弥彦

お宿だいろく

越後一の大鳥居で有名な彌彦神社の門前町に建つ畳敷きの純和風旅館

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

近畿地方＞兵庫県＞有馬

竹取亭円山

有馬の名湯、金泉＆銀泉の2つの源泉を体感できる雅な雰囲気の湯宿

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

Kyushu region＞Nagasaki prefecture＞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 region＞Kumamoto prefecture＞Ueki Onsen

Koyoi-no-Yuyado YUUZEN

Enjoy the hot spring like a thick lotion in the open-air guest room

1 night/2 meals: From 21,800 yen
Day trip: From 6,000 yen

九州地方＞熊本県＞平山

ほたるの長屋

1日5組限定のプライベート空間～すべて離れの温泉風呂付き客室

1 night/2 meals: From 20,000 yen
Day trip: From 2,000 yen

Kyushu region＞Kumamoto prefecture＞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 16,650 yen
Day trip: From 1,300 yen

九州地方＞熊本県＞黒川

旅館こうの湯

全室に源泉かけ流し露天風呂が付く離れの宿

1 night/2 meals: From 19,800 yen
Day trip: From 1,300 yen

Kyushu region＞Oita prefecture＞Sujiyu Onsen

Yamaai-no-Yado KIYASUYA

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

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

九州地方＞大分県＞由布院

草庵秋桜

美肌の湯・露天風呂付き離れと絶品創作懐石が評判の湯宿

1 night/2 meals: From 25,000 yen
Day trip: From - yen

Kyushu region＞Oita prefecture＞Yufuin Onsen

Yufu-no-Oyado HOTARU

100% natural free-flowing creamy hot spring water from the source

1 night/2 meals: From 15,500 yen
Day trip: From 500 yen

九州地方＞鹿児島県＞妙見

忘れの里　雅叙苑

露天風呂付き客室はここから始まった…日本の原風景を残す茅葺きの宿

1 night/2 meals: From 25,560 yen
Day trip: From 3,000 yen

東北地方＞山形県＞蔵王

善七乃湯

源泉100％かけ流し・白濁の美肌湯を貸切露天風呂で体感

1 night/2 meals: From 15,000 yen
Day trip: From - yen