Onsen with an open-air bath in Hakone Onsen
Rotenburo — bathing outdoors, which is what most people picture when they picture an onsen.

Tenzan Tohji-kyo
天山湯治郷
Visited · No.8Tattoos OK (day visit)Tattoos not allowed (overnight)Day visits without staying
Hakone Yuryo
箱根湯寮
Tattoos OK (day visit)Private bath
Hakone Kowakien Yunessun
箱根小涌園ユネッサン
OK if covered (day visit)
Hakone Kowakien Motoyu Mori no Yu
箱根小涌園 元湯 森の湯
OK if covered (day visit)Private bath
Yunosato Okada
湯の里おかだ
Tattoos not allowed (day visit)Private bath
Kappa Tengoku
箱根湯本温泉 かっぱ天国
Policy not published (day visit)Policy not published (overnight)Private bathDay visits without staying
Hakone no Yu
湯遊び処 箱根の湯
Policy not published (day visit)
Ryuguden Honkan
絶景日帰り温泉 龍宮殿本館
Tattoos not allowed (day visit)
Yoshiike Ryokan
箱根湯本温泉 吉池旅館
OK if covered (day visit)OK if covered (overnight)Private bathDay visits without staying
Hakone Kowakien Ten-yu
箱根小涌園 天悠
OK in a private bath (overnight)Private bath
Hakone Hotel Kowakien
箱根ホテル小涌園
Policy not published (day visit)OK in a private bath (overnight)Private bathDay visits without staying
Hakone Yumoto Tenseien
箱根湯本 天成園
Tattoos not allowed (day visit)Tattoos not allowed (overnight)Private bathDay visits without staying
Hakone Kowakien Mikawaya Ryokan
箱根小涌園 三河屋旅館
OK in a private bath (overnight)Private bath
Gora Hanaougi
強羅花扇
Tattoos OK (overnight)Private bath
Hakone Gora Onsen Kinoyu Setsugetsuka
箱根強羅温泉 季の湯 雪月花
OK in a private bath (overnight)Private bath
Susukinohara Ichinoyu
仙石原 ススキの原 一の湯
OK if covered (day visit)OK if covered (overnight)Private bathDay visits without staying
Mount View Hakone (Kawawaki-no-yu)
川涌の湯 マウントビュー箱根
Policy not published (day visit)Policy not published (overnight)Private bathDay visits without staying
KAI Hakone
界 箱根
Tattoos OK (overnight)Private bath
Yumoto Fujiya Hotel
湯本富士屋ホテル
OK if covered (day visit)OK if covered (overnight)Private bathDay visits without staying
Hotel Okada
ホテルおかだ
Tattoos not allowed (day visit)Tattoos not allowed (overnight)Private bathDay visits without staying
Hakone Suishoen
箱根・翠松園
OK in a private bath (overnight)Private bath
Hakone Ashinoko Hanaori
箱根・芦ノ湖 はなをり
OK in a private bath (overnight)Private bath
Tonosawa Ichinoyu Honkan
塔ノ沢 一の湯本館
OK if covered (day visit)OK if covered (overnight)Private bathDay visits without staying