You can dig your own hot spring pool right on the riverbank at certain spots, mixing bubbling earth-water with the cool river flow for a custom temperature.
So, pack light. Book the private bath. Leave the group chat behind. Your onsen is waiting. Go Guy Plus Onsen Trip
Beyond the bath, the “Plus” aspect shines during the kaiseki dinner. A multi-course parade of seasonal, local delicacies demands presence. You pass dishes to your friends, argue over which cut of wagyu is best, and cheers to nothing in particular. Later, in the tatami-mat room, the futons are laid out side-by-side. The lights go out, but the conversation continues in the dark—the kind of late-night rambling that defined youth and is sorely missing in adulthood. You can dig your own hot spring pool