Uetakecho, Kita Ward, Saitama City, Saitama Prefecture
Mira Onsen SPA-HERBS
A good half-day choice from Omiya or Toro if you want a natural spring, stone spa, dining and a place to unwind. It is not a low-cost quick soak, and tattoos of any size are prohibited.
Check before bathing
- Opening hours
- Baths are open 09:00–01:00; last admission 24:00. Adult admission is ¥1,265 on weekdays and ¥1,520 on weekends and holidays. Stone-spa packages are ¥2,000 on weekdays (¥1,675 after 20:00) and ¥2,800 on weekends and holidays (¥2,110 after 20:00); stone spa is for junior-high students and older.
- Access
- A free shuttle from Omiya West Exit runs on a limited timetable, seats 28 and is first-come, first-served. Toro Station is about a nine-minute walk.
- Tattoo policy
- Tattoos of any size, tattoo-like stickers and body painting are prohibited. The current rules do not list a cover-seal exception; guests found in violation may be asked to leave without a refund.
Spring & water temperature
- Spring-source temperature
- Not published; 'cool spring' is a classification, not a precise temperature.
- Bathing temperature
- Fixed temperatures for the natural spring baths are not published.
- Spring source
- The facility's own natural spring from 1,100 metres underground; the current main pages do not name the spring.
- Spring classification
- Alkaline simple hot spring; low-tonicity, alkaline and cool spring.
- pH
- Not published in current first-party information; older third-party figures are not substituted.
- Flow rate
- Not published.
- Water handling
- The facility confirms natural spring water in its hot-spring bathing area, alongside carbonated, silk and other functional baths. Current official pages do not publish a complete pool-by-pool table for water addition, heating, circulation or disinfection; the whole facility is not described as source-flowing.
- Analysis date
- 2026
Bathing indications
The facility lists general bathing indications including neuralgia, muscle and joint pain, sensitivity to cold and fatigue. This is not a treatment guarantee.
Tattooed visitors cannot enter. The free shuttle has limited seats and departures; verify the timetable before relying on it.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
