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Koshuyokujo Ikoi Hot Spring

公衆浴場 憩の湯こうしゅうよくじょう いこいのゆ

Public Bathhouse
Kansai·Nara

Day Use

Yes
09:00–21:00
¥600

Bathing & Water

Natural onsen water

Uses natural hot spring water

Indoor BathYes

Enclosed indoor bathing area

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

十津川温泉2号・7号混合源泉

Totsukawa Onsen Wells No.2 + No.7 Mixed Source

Operated by · 憩の家

Mixed source

Bicarbonate
+ Chloride

Sodium Bicarbonate-Chloride spring

Hot source · 58°C
Composition fingerprint1.7 g/kg dissolved · Hypotonic
Na⁺91
HCO₃⁻63
Cl⁻34
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Bicarbonate HCO₃⁻
"soda" — softens skin, leaves it smooth.
Known good for
  • Smooth skindry, rough skin
  • Aches & jointsstiff shoulders
  • Warmingcold sensitivity

A bicarbonate spring led by sodium with a chloride layer, blended from Totsukawa wells No.2 and No.7. Hot at 58 °C and weakly alkaline, it carries the soft, skin-smoothing feel of a soda-style water with a salty edge that helps the heat linger after the bath.

Analyzed Sep 8, 2023·有限会社奈良環境分析研究所·Cert no. 奈良県20の第1号

Explore the water

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Sergey M
1 year ago

616. Koshuyokujo Ikoi Hot Spring, Totsukawa Onsen, Nara Old-school onsen for 600. Operating hours stated as 09:00 to 21:00. Indoor bath. Clear water, 47.5 degrees. There's a cold water hose for diluting. Stuffy inside. 15.06.2025

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Last updated June 23, 2026