Soaking in a Japanese onsen is a must-do experience when traveling to the Land of the Rising Sun. However, traditional onsen systems that separate bathers by gender can be a challenge for couples. For this reason, private onsen have become a popular choice for enjoying hot spring baths in a romantic and private setting.
What Is an Onsen and a Private Onsen
Onsen
An onsen is a natural hot spring bath sourced from geothermal springs and found throughout various regions of Japan. Onsen water contains natural minerals and is believed to provide relaxation and health benefits. In Japanese culture, soaking in an onsen is also an integral part of lifestyle and tradition.
Private Onsen
A private onsen, on the other hand, is an onsen facility reserved exclusively for one group or one couple. This type of onsen allows couples to bathe together without sharing the pool with other guests, making it more comfortable and appealing for foreign visitors.
Why Private Onsen Are Ideal for Couples
Private onsen offer a level of privacy that cannot be found in public onsen. Couples can enjoy quality time together without feeling awkward, especially for tourists who are not yet accustomed to Japan’s communal bathing culture. In addition, many private onsen feature natural scenery such as mountains, forests, or traditional Japanese gardens. This makes the soaking experience not only relaxing, but also romantic and memorable.
Types of Private Onsen in Japan
In-Room Onsen
In-room private onsen are usually available at ryokan or traditional hotels. The hot spring bath is located directly inside the room, allowing guests to use it anytime during their stay.
Kashikiri Onsen
Another type is kashikiri onsen, which are private onsen rented by the hour. These are typically offered by ryokan or public onsen facilities and must be reserved for a specific time slot, such as 30 or 60 minutes.
Things to Prepare Before Using a Private Onsen
Although private onsen offer exclusivity, they still follow the basic etiquette and rules of Japanese onsen culture. Understanding and preparing the following points will make your soaking experience more comfortable, safe, and enjoyable.
Clean Your Body Before Soaking
Before entering a private onsen, guests are required to thoroughly wash their bodies. Shower areas are usually equipped with soap and shampoo. This practice not only keeps the onsen water clean but also reflects Japanese bathing culture, which emphasizes cleanliness before relaxation.
Towel Rules in the Onsen Area
A small towel (tenugui) is usually provided by the accommodation. This towel should not be dipped into the onsen water, as it can contaminate it. Typically, the towel is placed on the head or set aside at the edge of the bath. A larger towel is used after soaking.
Clothing and Privacy
Most private onsen are used without clothing, even when bathing with a partner. This is normal in Japanese onsen culture. However, some accommodations allow the use of towels or light swimwear—be sure to check the specific rules of each facility.
Safe Soaking Duration
Soaking in hot water for too long can cause dizziness or fatigue. The ideal soaking time is usually around 10–15 minutes per session. If you wish to soak longer, it’s best to step out, rest for a while, and then re-enter.
Hydration Before and After the Onsen
The high temperature of onsen water can lead to dehydration. Make sure to drink water before and after soaking. Many ryokan provide drinking water or tea for guests after using the onsen.
Additional Etiquette to Keep in Mind
Do not swim, dive, or play in the onsen. Keep the atmosphere calm and relaxing. If the private onsen is rented by time slot, be sure to leave on time so as not to disturb the schedule of the next guests.
Enjoying a private onsen in Japan is easier when you stay connected! Make sure your trip is smooth and stress-free—get a Japan eSIM before you go and have maps, translation, and booking apps at your fingertips while you soak in ultimate relaxation.
Estimated Cost of Private Onsen in Japan
The price of private onsen varies depending on location and type. In-room private onsen are usually included in the room rate and tend to be more expensive than standard rooms. For kashikiri onsen, rental fees are generally charged per hour and are more affordable, although prices may increase on weekends or during peak holiday seasons.
