Onsen OniOnsen Oni

Search Onsen Oni

Search onsen, areas, prefectures and pages.

Ryokan Ichinoi

黒川温泉 旅館 壱の井くろかわおんせん りょかん いちのい

Lodging
Kyushu & Okinawa·Kumamoto

Day Use

Yes
10:00–14:30

There are days when the facility is closed.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Bathing Arrangements

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Policies & Services

TattooYes

Allows entry with visible tattoos

WashingYes

Shower, wash stations, soap and shampoo provided

美里

Misato Spring

Operated by · 旅館 壱の井

Sulfur
Color
faintly yellow and clear
Taste
not recorded
Odor
faint hydrogen sulfide
pH 8.0Weakly alkalineHot source · 37°CSulfur-rich
Composition fingerprint0.2 g/kg dissolved · Hypotonic
K⁺9
HCO₃⁻5
CationsAnions
Potassium K⁺
minor; matters for drinking limits.
Bicarbonate HCO₃⁻
"soda" — softens skin, leaves it smooth.
Known good for
  • Skin conditionsatopic skin, eczema
  • Circulationtired legs
  • Aches & jointsstiff shoulders
  • Sensitive-skin cautionbroken or dry skin

A simple sulfur spring of the hydrogen-sulfide type, carrying a faint rotten-egg note of H₂S and a slightly yellow, clear cast at the source. White flecks of 'yunohana' — sulfur crystals — drift in the water as a hallmark of the bath. Lightly mineralized and gentle on the body, it still delivers the unmistakable aroma of a true sulfur spring.

Sampled at wellhead·Analyzed May 30, 2017·株式会社 同仁グローカル·Cert no. K19110704

Explore the water

Views

Forest

Programs

Loading map…

3.0

2 reviews

from 1 reviewer

5
0
4
0
3
2
2
0
1
0
SM
Sergey M
1 year ago

14. Ryokan Ichinoi, Kurokawa Onsen ★ Visited for higaeri, located a short uphill walk from the Kurokawa tourist center. Higaeri usually available from 10:00 to 14:30/15:00, sometimes with several closed days per week. Included in the Kurokawa tegata. Higaeri guests only have access to one outdoor bath. Outdoor stone bath. Clear water with a small amount of fine white mineral deposits. Slight proper sulfurous onsen smell. Temperature 42-43. View from the bath of a hill and forest. Because the higaeri window is very narrow, not always available, it's uphill from the tourist center, and only one bath is accessible — for higaeri it may not be as interesting in Kurokawa compared to other ryokans. But that doesn't change the fact that it's a pleasant stone rotenburo with a natural view. 08.04.2025

1
2
3
4
5
6
7
8
SM
Sergey M
2 years ago· edited

14. Ryokan Ichinoi, Kurokawa Onsen ★ Day-use visitors are allowed, and it’s included in the pass. They only let me into the outdoor bath. It’s small, there are no showers there, and you change clothes almost outdoors. The water temperature is moderate, there is a smell, and the water is clear with a few white bits of “lime” floating in it. Towel, ¥200. Compared with the others in Kurokawa, and only in this format, it can be skipped. 27.12.2023

1
2
3
4
5
Onsen Oni

Last updated June 19, 2026