Kamenoi Hotel Nagatoro Yorii Onsen

Kamenoi Hotel Nagatoro Yorii Onsen is a hotel-based hot spring on the edge of Nagatoro in Yorii, in the foothills of the Chichibu mountains in Saitama. Unlike the standalone day-use bathhouses elsewhere in the district, it is attached to a full-service hotel, so its indoor and outdoor baths are set up for both walk-in day visitors and overnight guests, with the bath itself framed by open mountain views across the Chichibu range. Day-use bathing is offered on a fixed window, typically 11:00AM to 3:00PM, while overnight guests have round-the-clock access to the baths as part of their stay. Overnight packages start from around ¥12,000 per person and include meals, following the traditional Japanese ryokan-style format of dinner and breakfast bundled with the room rather than booked separately. For guests staying the night, the hotel offers an optional in-house massage, giving Yorii Onsen a treatment option that the day-use-only onsen facilities nearby do not provide; day visitors, however, should not expect massage access, as it is reserved for lodging guests. The property's reputation rests on its mountain-view bathing rather than an extensive spa menu -- this is a scenic hot spring hotel first, with wellness treatments as a secondary add-on for overnight guests. Reservations are recommended for overnight stays, particularly around weekends and peak Chichibu hiking or Nagatoro rafting season, when accommodation in the area fills quickly; day-use bathing during the 11:00AM-3:00PM window is generally available on a walk-in basis. Day-use bathing costs ¥800, while overnight stays with meals start from about ¥12,000 per person.