Founded in 1715 during the Shotoku era, Kinokuniya is a venerable ryokan with over 300 years of history in Hakone's Ashino-yu district. The inn was honored as a resting place for Emperor Meiji and has been beloved by literary figures and cultural luminaries throughout its history. Spanning approximately 3,000 tsubo of grounds, the property boasts 15 spring sources and 15 baths of varying sizes, offering two distinct types of natural hot spring water: milky white sulfur springs and clear sodium bicarbonate springs. With a metasilicic acid content of 139 mg, the water is celebrated as a beauty spring. The main building's Yukoden features sulfur-rich milky waters, while the annex's Kihinden offers crystal-clear bicarbonate spring water. The Shotoku no Yu private bath, available exclusively to overnight guests, faithfully recreates the bathing hall from the inn's founding era. Day-use bathing is also available at a reasonable 1,000 yen for two hours, allowing visitors to experience the tranquil mountain atmosphere unique to Ashino-yu, away from Hakone's tourist crowds.