秩父観光やハイキングの客向け、というより、主に地元在住の高齢者の利用が多くみられる温泉施設です。とは言え観光客やハイキング客に対し排他的な雰囲気は全くなく、老若男女問わずゆったり天然温泉を楽しめます。 温泉は室内と室外（露天風呂）に分けられ、室内には2種類、露天風呂は1種類の泉質の温泉を楽しめます（室内の温泉の1つは、一部ジェットバス仕様となっています）。温度はいずれもぬるめであるため、長めの時間湯に浸かってものぼせることはあまりありません。武甲山の山間にある温泉施設であるからか、室外は夏は涼しいですが冬は施設に入ったばかりではかなり寒く感じるでしょう。一方でじっくりと湯に浸かった後で室外に出れば、冷たい空気が心地よく感じるはずです。 一方でサウナは狭く、しかもかなり高い温度設定です。人によって耳たぶや気管にかなりの痛みを感じる可能性があることに注意が必要です。さらに室内温泉の床はかなり滑りやすいです。特に子供は走ると滑って大怪我をする可能性がかなり高いと思います。 温泉の他、休憩スペース（予約なし・要予約の2か所）・ゲームセンター・お土産屋等、様々な設備が整っています。予約なしで利用できる休憩スペースは食堂と併設されており、基本的には料理やドリンクを注文して利用する必要がありますが、必ずしもその必要なく利用できるようです。予約なしで利用できる休憩スペースでは、他にも、近隣で活動する劇団による劇や、カラオケイベントが催されていることがあります。 ほとんどの利用客は車でこの施設に来ていますが、横瀬駅だけでなく西武秩父駅・御花畑駅から徒歩で訪れる客もいます（3km程度であるためハイキング感覚で利用できます）。但し夜遅くになると、周辺は街灯も少なく真っ暗になることに注意が必要です。 This hot spring facility is mainly used by elderly local residents rather than tourists and hikers in Chichibu. However, there is no exclusive atmosphere for tourists and hikers, and both men and women of all ages can enjoy the natural hot spring in a relaxed atmosphere. The hot springs are divided into indoor and outdoor (open-air) baths, with two types of hot springs in the indoor baths and one type in the open-air baths (one of the indoor baths has a partial jet bath). The temperatures are both lukewarm, so even if you soak in the baths for a long time, you will not get very hot. Because the spa is located in the mountains of Mt. Muko, it's cool outside in summer, but in winter, it may be quite cold when you first use the outside space before soaking hot spring. On the other hand, if you go outside after a long soak in the hot spring, you will feel comfortable in the cool air. Saunas, on the other hand, are small and the temperature is quite high. It should be noted that some people may experience considerable pain in their earlobes or windpipe. Furthermore, the floor of the indoor spa is quite slippery. Especially children are quite likely to slip and cause serious injury if they run. In addition to the hot springs, there are various other facilities, including a rest area (two locations, one without reservations and one requiring reservations), a game center, and a souvenir shop. The rest space that can be used without a reservation is also the diner, and while it's basically necessary to order dishes and drinks to use the space, it's not necessarily necessary to do so. Other events that may be held in the rest areas that can be used without reservations include plays by theater troupes that are active in the neighborhood and karaoke events. Most visitors come to the facility by car, but some walk from Seibu-Chichibu or Ohanabatake stations as well as Yokoze station (it is only about 3 km away, so it can be used like a hike). Be aware, however, at night, the area is pitch-dark with few streetlights.

We went there with a party of five people before our climb to Mount Tomokori. Unfortunately, we were a bit late so that we arrived after the admission time to the Onsen (this was because we didn't realize that that they did not sell us a ticket on an earlier train). But then something happened, what you would definitely not expect in Japan: They let us foreigners in to the onsen, although there were only 30 minutes left before they closed. And this was a really, really great experience. It is a nice place to be and we really enjoyed staying there overnight in their rooms which are also nice. We also enjoyed the breakfast. Overall, a four star place, but because of this service, I give them five.