Mercure Wakayama Kushimoto Resort & Spa

Mercure Wakayama Kushimoto Resort & SpaMercure Wakayama Kushimoto Resort & Spa

Lodging
Kansai·Wakayama

Bathing & Water

OnsenYes

Uses natural hot spring water

Water treatment

from Article 18 disclosure
  • Added water
    Yes
  • Reheated
    Yes
  • Recirculated
    Yes
  • Disinfected
    Yes
    塩素系薬剤
  • Bath additives
    No

串本町温泉

Kushimoto-cho Onsen
Chloride
Classification

Calcium-Sodium Chloride spring

A calcium- and sodium-led sodium chloride spring — salty and heat-retaining, leaving a faint mineral film on the skin. Richly mineralized at 9,132 mg/kg of dissolved solids, it is isotonic and neutral in pH, so it sits gently against the body. The bath water is diluted, reheated, recirculated, and chlorine-disinfected before reaching the pool, and the certificate marks it as bathing-only, not for drinking.

Source temperature
35.4°C
Warm
Tonicity
9.13g/kg
Isotonic
Free CO₂
2.20mg/kg
Low

Analyzed Feb 24, 2023·一般社団法人 和歌山県薬剤師会·Cert no. 和歌山県第2号

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SM
Sergey M
4 months ago

642. Mercure Wakayama Kushimoto Resort & Spa ★★ Stayed overnight, didn't get meals. Prices can be under 10k yen for two (without meals), and the hotel's condition is decent (you can tell it's aging, but they update it periodically), there are various perks/options (lounge with drinks, bike rental, pool, etc.), and very solid baths. Bath photos from the internet roughly match — the rotenburo looks and feels cooler in person, while the indoor bath is a bit simpler in person. 1. Outdoor stone bath. There's a view of the bay: sitting in the center of the bath you can see a small portion of the water, but at the edge or standing up the panorama expands significantly. The stones in the bath architecture are well-placed — you can take a break sitting on them. In the evening the stars were very visible. Clear water, temperature 41-42 in different parts of the bath. 2. Indoor zone. Breathing inside is good. 2.1. Large bath with clear water, temperature 40. 2.2. Sauna. 2.3. Cold bath. Great rotenburo and the place looks more expensive than its price. Considering the cost performance, recommended for an overnight stay in Kushimoto. 03.11.2025 04.11.2025