大沢温泉 依田之庄おおさわおんせん よだのしょう
Operated by · 旧依田邸温泉施設 依田之庄
Osawa Onsen Well No. 5 is a simple thermal spring in Matsuzaki, Shizuoka. Weakly alkaline (pH 8.1), it is soft on the skin and sits near the gentle 'beauty-water' family. With light mineralization of just 0.787 g/kg of dissolved solids, it is a mild, low-stimulus water. Because the source runs cool, the bath is reheated in winter.
Analyzed Jul 31, 2019·株式会社サイエンス
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246. 大沢温泉 依田之庄, Matsuzaki Public onsen in the countryside for 700, listed hours 10:00–20:00 (except Wed and Thu). They stamp the 60 Onsen of Shizuoka 24/25 booklet. The baths reportedly rotate every Sunday between two setups: two indoor baths, or an indoor bath + rotenburo. During my visit it was the first setup with two indoor baths. Online photos match. Inside there are two rectangular baths with clear water, temperature 40. I couldn't notice any difference in water between the baths. Spacious room with high ceiling, easy to breathe. There's an exit to the backyard where you can stand, breathe fresh air, and observe the spiders that have actively settled under the roof. If for some reason you're nearby, it's worth stopping by — a pleasant place.
