salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
Warmingcold sensitivity
Cutsminor wounds
Recoveryfatigue, stress
A hypertonic sodium-calcium-magnesium chloride spring. Richly mineralized at 14.34 g/kg total dissolved solids — the bath leaves a salty mineral film on the skin and a long-lingering warmth typical of high-salt chloride waters. Known by its legacy name as earth-chloride / common-salt-type, an 'earth-chloride / common-salt' spring in which calcium and magnesium share the cation load with sodium.
Sora Niwa Terrace Kyoto is a hotel near Shijo Kawaramachi with its own hot spring, called Shijo Kawaramachi Onsen, feeding a rooftop bath on the top floor. Two baths, Yasaka-no-yu (八坂の湯) and Niwa-no-yu (庭の湯), switch between men and women daily, and each has a silky jacuzzi section where micro-bubbles are said to leave skin smooth. From up there you look out over the Higashiyama hills, the Kamo River and the city below. A foot bath sits nearby on the rooftop terrace, open in the evening alongside a welcome drink service. The bath is for hotel guests only, with no day-use option, and its deep section means preschoolers and anyone under 140cm can't use it. Staff ask tattooed guests to check in with them before bathing.
305. Sora Niwa Terrace Kyoto
A hotel with an onsen in Kyoto. It has some Japanese vibes style-wise, but it's still a modern fusion place. Located in one of the best spots in the city — the prime riverside area, near Gion, Maruyama Park, restaurants, the nightlife street, 20 minutes by public transport to Fushimi Inari, 30 minutes on foot to Kiyomizu-dera. On New Year's there was a small special program with events. On the hotel's rooftop there's a great terrace with a foot bath and views including iconic city landmarks. Sunrise looks great both from the rooftop and from the onsen. There were booking issues with breakfast through Trip.com, so with a late check-in we could only book a special New Year's treat for 5k (not worth it). The onsen sets rotate between M/F.
1. Main set of baths with a view on the balcony.
1.1. Round carbonated silk bath, white water color, temperature around 39. View through a lattice fence.
1.2. Transitional zone of the main bath, shallow, clear water. Temperature around 42. View through a lattice fence.
1.3. Bath with a view, clear water. Temperature around 40. Nice city view, though slightly limited around the sides and there's a canopy fragment under the window that prevents an infinity view.
2. Second set of baths. Also on the balcony, but no view — the line of sight is blocked by separate shutters. Worth visiting when they rotate M/F, but it's important to get the first main set during your hotel stay.
2.1. Round carbonated silk bath, white water color, temperature around 39.
2.2. Transitional zone of the main bath, shallow, clear water. Temperature around 40-41.
2.3. Far bath, clear water. Temperature around 40.
In my opinion, the best hotel with onsen option in Kyoto — top location, decent onsen (though fusion), great rooftop terrace. You could upgrade for more money through a room in the adjacent Bettei, but the terrace and onsen infrastructure is shared. I'd recommend considering it for accommodation.
