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Aqua Ignis

アクアイグニスアクアイグニス

Lodging
Kansai·Mie

Day Use

Yes
06:00–23:59

Kataoka Onsen / Onsen Cafe / Le / Furo:

¥600

Adults (middle school and up) weekdays 600 yen / weekends & holidays 800 yen; children (age 3 to elementary school) weekdays 300 yen / weekends & holidays 400 yen; under 3 free

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaNo

Dry heat sauna room

Capabilities

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooNo

Allows entry with visible tattoos

KidsWith Conditions

Welcomes children and families

Children aged 3 and up may use the baths. Under 3 may not enter the tub (baby bath provided). Children may use mixed-gender bath up to 120 cm / under age 7.

DiningYes

Restaurant or dining open to visitors (not just hotel meal plans)

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels available to rent or borrow

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

湯の山片岡温泉

Yunoyama Kataoka Onsen
Simple
Color
Colourless and clear
Taste
A faint carbonated tang
Odor
Odourless

Sodium Bicarbonate-Chloride spring

pH 8.5AlkalineHot source · 45°C
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Na⁺96
HCO₃⁻58
Cl⁻36
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
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin
  • Recoveryfatigue, stress

An alkaline simple thermal spring (Yunoyama Kataoka Onsen in the foothills of Yunoyama) with a softly slippery, beauty-water character — pH 8.5 at the wellhead is enough to give the skin that characteristic slip. Lightly mineralized at 0.54 g/kg dissolved solids, the water is gentle on the body, with a faint carbonated tang on the tongue that the certificate notes both at the wellhead and three days later in the lab.

Sampled at wellhead·Analyzed Nov 29, 2011·三重県保健環境研究所

Explore the water

Highlights

Steam Sauna

About

The onsen section, Kataoka-onsen (片岡温泉), runs indoors and in a bamboo-grove open-air bath on fresh kakenagashi flow with no dilution or recirculation. For staying guests, the detached organic villas each come with a private open-air bath on the same kakenagashi source. The wider complex adds two celebrity-chef restaurants (Italian and Japanese), a bakery, patisserie, strawberry farm, and Le Furo, a mineral stone room that delivers a low-heat infrared warmth rather than a conventional sauna.

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SM
Sergey M
2 years ago

52. Aqua Ignis, Yunoyama Onsen An onsen complex with accommodation, a coffee shop, dining, relaxation areas, and massage. There are also some extra activities involving a farm and other things, beyond the onsen itself. For Yunoyama, such a trendy, youthful complex feels very unexpected. Literally 15-20 minutes on foot from the complex you can find abandoned buildings, and a large industrial bridge passes right by. Went for higaeri. Runs from 06:00 to 24:00. Paid 900 for entry, large and small towels. Around 22:00 there was a decent crowd, but plenty of space and it was nice. Didn't see foreigners, few old-timers. Baths: 1. Indoor zone has one large hot bath with clear water. A light smell is noticeable. Breathing is good. 2. Outdoor zone consists of a small garden with thin bamboo in the center and three baths around it under individual roofs: 2.1. A sitting bath with a view of the garden and the bridge. 2.2. A lying bath with a view of the garden. A bit small for bigger guys — hard to keep your chest underwater. 2.3. A medium round regular bath. Also with a garden view. 2.0. Water in all outdoor baths is clear, slightly milder in temperature than the indoor bath. In the evening, chilling in these baths and zoning out watching the thin bamboo struggling against the strong wind — very blissful. If you're going to Yunoyama, visiting this place is highly recommended. With such great operating hours, you can do it pretty much any time.

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Last updated June 25, 2026