"This expansive onsen features hot spring baths with forest views in an especially serene environment. It's easy to spend hours relaxing in the different baths, sauna, and nap rooms. Everything is clean and calm. To really get into the experience, book a 20-minute back or foot rub, or a 60-minute full body massage with oil. If you're hungry, the restaurant specializes in charcoal cooking that ranges from bar snacks like grilled ayu (freshwater fish) to multi-course meals. You can also get a soft-serve or juice from the take-out window and have it in the garden, or an aperitif." - Brandon Presser