Onsen OniOnsen Oni

Hotel Hana Isawa

ホテル花いさわホテルはないさわ

Lodging
Isawa Onsen
Chubu·Yamanashi
055-262-4166hana-isawa.com

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

ホテル花いさわ源泉

Hotel Hana Isawa Spring

Operated by · 株式会社 豊栄

Sampled at wellhead
湯
Simple
Classification

Sodium Carbonate-Bicarbonate spring

A sodium-led alkaline simple thermal spring. It is only lightly mineralized at 206 mg/kg of dissolved solids, so it stays gentle on the body, while a notably alkaline pH of 9.5 gives the slippery, skin-smoothing feel of the Japanese beauty-water family. A generous 68.5 mg/kg of metasilicic acid leaves a thin silica film that makes skin feel noticeably softer afterwards.

pH
9.50
Alkaline
Source temperature
28.7°C
Low temp.
Tonicity
0.21g/kg
Hypotonic
Flow rate
84L/min
Typical
Color
colorless and clear, faintly yellow-brown
Taste
very faintly sulfurous
Odor
very faint sulfur note
Highlights
  • High silica
  • Top-decile alkaline

Analyzed Mar 12, 2024·一般社団法人 山梨県食品衛生協会·Cert no. 梨食第令5-6号

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SM
Sergey M
1 year ago

562. Hotel Hana Isawa, Fuefuki, Yamanashi ★ Visited for higaeri at 1650 yen (they give a towel set and a disposable toothbrush with toothpaste). Higaeri hours are from 14:00 to 18:00. Baths rotate between male/female. Staff is very friendly and attentive. They stamp the Yamanashi 100 Onsen book. There's a shuttle bus between three partner hotels with higaeri: Isawa View Hotel, Hotel Hana Isawa, and Kasugai View Hotel. Bath photos from the internet. Outdoor bath in stone. There's one utaseyu. The bath is behind a fence with no view, but it's cozy overall. Water is clear, temperature around 41°C. Indoor bath with clear water, temperature around 42°C. Breathing inside is tolerable. Overall left a pleasant impression. 13.05.2025