A spacious indoor bath and an open, expansive open-air bath. With abundant spring water and fresh water replaced daily, you can always enjoy clean, freshly drawn natural hot spring water. This sulfur spring with salinity warms you to the core, promotes circulation, and gently eases everyday fatigue and muscle pain. The baths for men and women switch between morning and evening, so you can fully enjoy Akayu’s famous waters in spacious tubs with different atmospheres.

Baths that use fresh spring water exactly as it comes from the source, such as the semi-open-air "Source-Fed Tub Bath" and unique baths like "Ryujin no Yu" and "Raw Stone Bath," each carved from a large andesite boulder. Leaning back in the stone bath and soaking in the fresh hot spring water overflowing endlessly is an exceptional experience. The faint scent of sulfur and the soft, smooth feel of the water are distinctive, and its high heat-retention effect keeps you warmly comfortable for a long time even after you get out.

A luxurious private bath where you can enjoy Akayu Onsen’s famous waters all to yourself, feeling like a lord. While gazing at a charming one-tsubo garden, you can soak in a bathtub where fresh spring water flows continuously and overflows abundantly. In a private space free from interruption, you can savor the hot spring in silence to your heart’s content and spend a luxurious, deeply relaxing moment (reservation required, extra charge).