Kokoro no Yu in Ibusuki: A Long-Stay Bathhouse with an Early Morning Option

Kokoro no Yu makes sense when the sand bath is not the point of the day. Its regular admission covers a public bath with several pools, an outdoor bath and two types of sauna. Adults pay ¥800 on weekdays and ¥900 on weekends and public holidays.

The usual daytime reception closes at 10 p.m., although the building stays open until 10:30.

The early-morning session runs from 6 to 10 a.m., with reception ending at 9:30. It costs ¥500 on weekdays or ¥600 on weekends and holidays, but only the indoor baths are open. That is useful before checkout; it is not a cheaper way to use the whole facility. If your first visit to Ibusuki is mainly about sand bathing, Saraku is the more distinctive stop.

Choose by the kind of visit you want

Kokoro no Yu is designed for a longer stay. The public bath has six bath types and two saunas; the exact mix differs between the men’s and women’s areas, and some features are gender-specific. The facility also has a rest area with heated stone rooms, an ice room, a Finnish-style sauna and other relaxation spaces. These extras are a separate, higher-priced option, so the ¥800–900 admission should not be read as an all-facilities ticket.

The public baths use chloride-spring water. The facility’s own information confirms a source temperature of 47.6°C, but that does not tell you the temperature of every tub. It identifies some baths as source-fed, not every pool as one uniform flow-through bath.

The distinction matters when comparing Kokoro no Yu with Ibusuki’s other stops. Saraku is for sand bathing and has a large indoor bath area to rinse off afterwards. Tamatebako is a separate open-air bath at Healthy Land, chosen mainly for its coastal views. Kokoro no Yu is inland and has no sand bath; its strength is the range of bathing and sauna options.

The early session is deliberately simpler

From 6 to 10 a.m., the facility opens only its indoor baths. Adults pay ¥500 on weekdays and ¥600 on weekends and public holidays. The same 9:30 a.m. last-entry time applies. If you are leaving Ibusuki on a late-morning train, this can fit before checkout, provided you account for the trip back to the station.

After 10 a.m., adults pay ¥800 on weekdays or ¥900 on weekends and holidays. Children’s prices differ by age: the official listing gives separate rates for elementary-school children and preschoolers. Special pricing may apply on some dates, so check the operator’s current page if your visit falls on a holiday or event period.

Private rooms solve a different problem

Four bookable family baths are available downstairs. Three have carved-stone outdoor tubs and Japanese- or Western-style rooms; the fourth, Hinoki, has a cypress bath and an accessible Western-style room where a family member may accompany someone who needs care. The listed price is ¥2,400 per room for one hour, with each additional 30 minutes costing ¥1,200. The operator recommends booking for weekends and after 5 p.m.

The facility identifies its overall spring as a natural chloride spring and explicitly labels the second-floor outdoor bath as source-fed. It does not describe the spring-water supply for each of the four private rooms individually. If a verified natural spring in the private tub is essential, confirm that point with the facility before booking rather than inferring it from the building-wide description.

Kokoro no Yu is at 9236-7 Higashikata, a short drive from Ibusuki Station. The operator lists parking on site. Check the current access information or call ahead if you are relying on a local bus, need an accessible route, or plan to use a particular bath feature; layouts and maintenance notices can change.

For a visit built around the coast or a first sand bath, use the Ibusuki stay-area guide to match your base to tomorrow’s route. If you are deciding between two sand-bath sites, the Saraku and Sayuri comparison explains how their locations and facilities differ.

Sources

Checked: September 27, 2026. - [Kokoro no Yu: current rates, hours, morning bathing, family baths and facilities](https://ibusukikokoro.jp/hotspring/) - [Ibusuki Tourism Association: Kokoro no Yu facility details and access](https://www.ibusuki.or.jp/spa/public/kokoro/) - [Kokoro no Yu: user guide and current visitor information](https://ibusukikokoro.jp/userguide/)

Tags: Kokoro no Yu, Ibusuki day-use onsen, Ibusuki sauna, morning bath, family bath