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Enjoy Japan's Hot Springs: Onsen Options for Those Who Prefer Not to Be Undressed Publicly

Updated September 14, 2026 · Reviewed by auto (grounded facts + verify)

For many travelers, the idea of a Japanese onsen is a dream, but the reality of public nudity can be a barrier. Fortunately, Japan offers beautiful and relaxing hot spring experiences that cater to those who prefer more privacy. You can enjoy the soothing waters of an onsen without the need for public undressing by opting for private onsen facilities. These private baths, known as kashikiri-buro or kazoku-buro, allow you to soak in peace and comfort [1].

Understanding Private Onsen Options

The term kashikiri-buro (貸切風呂) translates to "reserved bath," and kazoku-buro (家族風呂) means "family bath." Both refer to private onsen spaces that you can book for your exclusive use [1]. This offers a solution for travelers who are uncomfortable with public nudity, have tattoos that are not permitted in public baths, or simply desire a more intimate and personal onsen experience [2, 6]. These private baths are designed to provide all the benefits of an onsen – relaxation, rejuvenation, and the therapeutic properties of mineral-rich hot spring water – without the social anxieties that public bathing can sometimes bring [3].

There are two primary ways to access private onsen facilities:

In-Room Private Onsens

The most luxurious and convenient option is an in-room private onsen. These are baths that are directly attached to your guest room, often referred to as heya-tsuki rotenburo (a room with an attached open-air bath) or naiburo (an indoor private bath) [3]. This means you can step directly from your room into your own private hot spring, whether it's an open-air bath (rotenburo) with views of nature or a cozy indoor bath [7]. The cost of these in-room private baths is typically included in your room rate, making them a seamless part of your stay. This option provides the ultimate in privacy and allows for spontaneous dips whenever you wish, without needing to book a specific time slot or leave your accommodation [8].

Reservable Private Baths

The second type of private onsen is a reservable bath that is separate from your guest room. These are often located within the onsen facility or ryokan but are not attached to individual accommodations. You can book these private baths for a specific time slot, usually for 45 to 60 minutes [2]. Upon arrival at your ryokan, you can typically reserve your preferred time at the front desk [2]. This is a fantastic option for those who are staying in a room without a private bath or for day visitors who want to experience a private onsen without an overnight stay [3].

How to Book and Use Private Onsens

Booking your private onsen experience is straightforward, but advance planning is often recommended, especially for in-room private baths.

Booking In-Room Private Onsens

Rooms with in-room private open-air baths are highly sought after and represent a smaller portion of the total rooms available in many ryokans [8]. Because of their popularity, it is advisable to book these accommodations well in advance. For standard seasons, booking 3-4 months ahead is a good idea, and for peak travel periods, such as cherry blossom season or autumn foliage, you may need to book 6 months or even a year in advance to secure your preferred room [8]. These rooms are generally the most expensive, but the price includes the exclusive use of your private onsen [8].

Browse Hakone ryokan & hotel deals on Expedia → Browse Beppu ryokan & hotel deals on Expedia →

Booking Reservable Private Baths

Reservable private baths are usually booked on a first-come, first-served basis upon check-in at the ryokan [2]. It's a good idea to inquire about availability and make your reservation as soon as you arrive to ensure you get your desired time slot. The cost for a reservable kashikiri-buro session typically ranges from ¥1,000 to ¥4,500 for a 40-60 minute period [2]. However, many ryokans offer complimentary use of their reservable private baths for overnight guests, making it an included amenity rather than an additional charge [2].

Day-Use Private Onsens

For travelers who are not staying overnight at a ryokan but still wish to experience a private onsen, day-use options are available. These are often referred to as higaeri kashikiri onsen (day-use private onsen) [3]. Similar to reservable baths, these are typically booked by the hour and provide a perfect opportunity for a relaxing soak without the commitment of an overnight stay [3]. This is an excellent choice for those on a tighter schedule or who are exploring a region for a day trip.

Onsen Etiquette: Even in Private

While private onsens offer more freedom, it's important to remember that certain onsen etiquette still applies to ensure a respectful and enjoyable experience for everyone, and to maintain the purity of the hot spring water [13].

The Importance of Washing

Before you enter any onsen, whether it's a public bath or a private one, the first and most crucial step is to thoroughly wash your body at the designated shower stations [14]. This is a fundamental part of onsen etiquette and is essential for hygiene. You will find a washing area with stools, showers, and amenities like soap and shampoo. It is imperative to wash away all dirt and sweat from your body before entering the hot spring water [15].

Nudity and Swimsuits

Even in a private onsen, the traditional expectation is nudity [16]. Wearing swimsuits in a private bath is generally considered inappropriate and disrespectful to the onsen tradition [1]. While private baths eliminate the concern of public exposure, the custom of bathing nude remains [1].

The Modesty Towel

You will typically be provided with a small modesty towel. This towel is not meant to be worn in the bath or to soak in the water [17]. Instead, it is used for washing yourself at the shower station and then can be placed on your head or on the side of the bath while you are soaking [13]. The aim is to keep the bath water as pure as possible.

Tattoos and Private Onsens

One of the significant advantages of private onsens is that they are generally tattoo-friendly [6, 10]. In many public onsens across Japan, tattoos have historically been prohibited due to associations with organized crime. However, with private baths, this restriction is often lifted because you are bathing in an exclusive space [11]. This makes private onsens an excellent option for travelers with tattoos who wish to experience a Japanese hot spring without the worry of being turned away or needing to cover their tattoos [19].

Popular Regions for Private Onsen Experiences

Japan is dotted with incredible onsen towns, and many of them offer excellent private onsen options. Two particularly popular regions that are well-known for their abundant hot spring facilities, including private baths, are Hakone and Beppu [18].

Hakone

Located in Kanagawa Prefecture, Hakone is a mountain resort town famous for its stunning natural beauty, including views of Mount Fuji and Lake Ashi [18]. It is one of Japan's most popular onsen destinations, with a wide array of ryokans and hotels offering private onsen experiences. You can find luxurious ryokans with in-room private open-air baths overlooking the scenic landscape, as well as hotels with reservable private kashikiri-buro that you can book for a relaxing soak [18].

Find Hakone onsen tickets & tours on Klook →

Beppu

Situated in Oita Prefecture on Kyushu Island, Beppu is renowned as one of Japan's most prolific onsen towns, boasting an impressive number of hot springs [5]. Beppu offers a vast selection of accommodations, from traditional ryokans to modern hotels, many of which feature private onsen facilities. Whether you are looking for a room with a private rotenburo or a reservable family bath, Beppu provides numerous choices for a private and therapeutic hot spring experience [5].

Browse Beppu ryokan & hotel deals on Expedia →

The Allure of Gensen Kakenagashi

When exploring private onsen options, you might encounter the term 源泉掛け流し (gensen kakenagashi). This Japanese phrase signifies that the hot spring water is free-flowing and not recirculated [1]. It means that fresh, natural spring water is constantly being supplied to the bath, and the used water flows out. This is often considered a mark of a premium and authentic onsen experience, as it ensures the water is at its purest and most beneficial [1]. Many private onsens, especially those in high-quality ryokans, proudly feature gensen kakenagashi baths, offering an even more exceptional soak.

By choosing a private onsen, you can fully immerse yourself in the relaxing and rejuvenating traditions of Japanese hot springs, ensuring a comfortable and memorable experience tailored to your personal preferences.

Sources

[1] okonsen.net — https://okonsen.net/guide/private_bath_kashikiri_en [2] littlekyushuadventures.com — https://littlekyushuadventures.com/private-onsen-kashikiri-booking-guide-family/ [3] ryokanretreat.com — https://ryokanretreat.com/private-onsen-in-japan/ [5] littlekyushuadventures.com — https://littlekyushuadventures.com/kashikiri-onsen-beppu-family/ [6] japan.travel — https://www.japan.travel/en/au/story/7-tattoo-friendly-onsen-japan/ [7] kashiwaya.org — https://www.kashiwaya.org/e/magazine/onsen/private-onsen-2.html [8] afternoonteareads.com — https://afternoonteareads.com/how-why-book-a-private-onsen-japan-ryokan/ [10] tattoofriendlyonsen.com — https://www.tattoofriendlyonsen.com/private-onsen [11] japanryokanguide.com — https://www.japanryokanguide.com/en/blog/tattoo-friendly-ryokans-private-onsen [13] firebirdtours.com — https://www.firebirdtours.com/blog/japanese-onsen-etiquette [14] coalitionsnow.com — https://www.coalitionsnow.com/blogs/shoptalk/a-guide-to-japanese-onsen-etiquette-what-to-expect-do-and-avoid [15] marriott.com — https://traveler.marriott.com/asia-pacific/onsen-japan-etiquette-for-first-timers/ [16] kashiwaya.org — https://www.kashiwaya.org/e/magazine/onsen/rules2.html [17] thenaturaladventure.com — https://www.thenaturaladventure.com/blog/a-guide-to-japanese-baths-and-onsen-etiquette/ [18] hakone-japan.com — https://hakone-japan.com/things-to-do/onsen/private-hot-springs/ [19] reallyruraljapan.com — https://reallyruraljapan.com/tattoo-friendly