Best onsen for Stress & Autonomic in Yamanashi

1 picks ranked from onsen analysis-sheet data (official, verified and free-flowing sources prioritised)

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Isawa Onsen Simple Spring
Simple SpringVerified
Isawa Onsen
旅館　日の出温泉
Yamanashi Fuefuki· 旅館 日の出温泉 他 1 件Isawa Onsen
Gentle Mildly Alkaline Waters

Nestled in Kasugai-cho, Fuefuki City, Yamanashi Prefecture, a region renowned for its grape cultivation, this gentle hot spring is a true blessing from the earth, cherished by locals for generations. Its lukewarm waters, around 36.3℃, offer a comfort that invites you to linger indefinitely. The soft, weakly alkaline water delicately envelops the skin, gradually releasing tension from the body's core. It's a soothing retreat for those seeking to alleviate daily fatigue and find deep relaxation in mild waters.

Onsen RyokanDay-use BathPrivate Rental Bath
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHMildly Alkaline8.1
0714
TEMP36.3℃
0℃50℃100℃
KEY MINERALS
Metasilicic acid
123 mg/kg

A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.

Metaboric acid
6.9 mg/kg

A trace component with gentle antibacterial and anti-inflammatory action.

Bicarbonate ion
93.1 mg/kg

Softens dead skin cells for a silky bathing feel.

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Why onsen are considered good for Stress & Autonomic

The benefits of an onsen vary by spring type. Certain spring types are traditionally considered good for Stress & Autonomic, and the corresponding indications are listed in the legally required onsen analysis sheets. my Onsen Techo ranks the onsen best suited to your symptom and area based on analysis-sheet data, which is mandated for display under Article 18 of Japan's Hot Spring Act. Each onsen page shows mineral visualisations, bathing tips and booking options.