Hekisuiso (Day Use)

Spring-source temperature

Not published for Hekisuiso; the district's 54°C figure is not substituted

Bathing temperature

Not published; the inn describes hotter and cooler areas without fixed temperatures

Spring source

Sakihana Onsen water used by Hekisuiso; no individual source or well number is confirmed on the current property page

Spring classification

Simple sulfur spring, according to the local Sakihana Onsen classification; a current property-specific analysis was not available

pH

Not published for the property

Flow rate

Not published for the property

Water handling

The Gosen tourism association describes the bath as free-flowing. The large bath has hotter and cooler sections. The current pages do not itemize water addition, heating, recirculation, disinfection or flow rate for each bath, so the free-flowing description is not expanded into unreported technical conditions.

Adult admission is ¥700, but acceptance depends on the inn's daily operations; call ahead. The 05:30–midnight schedule is not an ordinary day-use entitlement. The private outdoor bath is described primarily as an overnight-guest amenity, and tattoo rules are unconfirmed.