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Kameyama Onsen Hotel
forumWhat families say
Families praise the chocolate-colored, 100% source-fed natural onsen and the thoughtful touches of a certified Welcome Baby inn, such as the children's bath and the small barrel tub. Guests also highlight rental items like the Bumbo seat, toilet training seat, and free baby futon, along with the playroom and the communal bath that's open all night.
Categories
Kids Facilities
Playroom
Playroom
The most popular spot with kids - a playroom full of a ball pit and picture books, where parents can relax on a sofa nearby and keep watch.
Communal bath (chocolate-colored natural onsen)
Communal bath (chocolate-colored natural onsen)
A natural onsen that flows naturally from 2,000 meters underground, 100% source-fed. The men's bath has a communal bath overlooking Lake Kameyama plus a cold source-water bath at 26.4°C, while the women's bath has a small, lukewarm tub for children. The water is a sodium chloride-bicarbonate spring, pH 8.7. Open all night, from 11:30 a.m. to 9 a.m. the next day.
- •The women's bath has a lukewarm tub for children, ideal for a child's first onsen experience.
- •Baby beds are provided in both the men's and women's changing rooms.
- •Odor-sealing diaper disposal bins ('Niowanaide Poi') are provided in the changing rooms.
- •A member of the Pink Ribbon Onsen Network; a dedicated shawl is available for free rental for guests who have undergone breast cancer surgery.
- •Day-use bathing is available (adults JPY 1,000; ages 3 through elementary school JPY 800; free for ages 2 and under; weekend/holiday pricing introduced from June 2026).
Private-hire open-air and semi-open-air baths
Private-hire open-air and semi-open-air baths
The private-hire open-air bath Ukameno-yu (a superb view of Lake Kameyama, with a 41°C tub and a 26°C source-water Goemon-style tub) and the private-hire semi-open-air baths Kameraku-no-yu and Yuraku-no-yu (the latter with a small barrel tub just for children).
- •Guests on the Welcome Baby plan receive a 60-minute private-hire bath as a plan perk, choosing from 3 p.m., 4:30 p.m., 6 p.m., 7:30 p.m., 9 p.m., or 7 a.m. the next day.
- •On other plans, private-hire baths cost extra and require reservation.
Rental baby and kids' gear (Welcome Baby support)
Rental baby and kids' gear (Welcome Baby support)
As a certified Welcome Baby inn, the hotel keeps a wide range of gear on hand for families with young children. Contacting the hotel in advance is recommended.
- checkBumbo baby seat
- checkBouncer
- checkToilet training seat
- checkBaby futon (free rental, limited quantity)
- checkDiaper bin
- checkHumidifying air purifier
- checkChildren's yukata, slippers, and jinbei (size 80 cm)
- checkChildren's tableware and bibs
- checkBaby soap
Dining (kids' menu and baby food support)
Dining (kids' menu and baby food support)
Dinner is a kaiseki multi-course meal (with an in-room dining plan available), and breakfast is a half-buffet. There is a wide range of kids' menus, including kids' lunch, mini plates, kids' curry, and udon.
- •Rice porridge can be prepared, and baby-food warming and baby-bottle sterilization are available (Welcome Baby plan benefits).
- •Allergies and food preferences can be accommodated with advance consultation.
Overview
Kameyama Onsen Hotel is a hot-spring ryokan on the shore of Lake Kameyama in Kimitsu, Chiba Prefecture. Its treasure is a 100% source-fed, chocolate-colored natural onsen (a sodium chloride-bicarbonate spring, pH 8.7) that wells up naturally from 2,000 meters underground. The men's bath has a communal bath overlooking Lake Kameyama plus a cold source-water bath (26.4°C), while the women's bath has a small tub for children. The hotel also offers a private-hire open-air bath (Ukameno-yu) and private-hire semi-open-air baths (Kameraku-no-yu and Yuraku-no-yu, the latter with a small barrel tub for children). Certified as a 'Welcome Baby' inn by the Miki House Child-Rearing Research Institute, the hotel offers thorough support for families with young children, including a playroom, baby-food warming, baby-bottle sterilization, and baby futon rental.
Kameyama Onsen Hotel is a hot-spring ryokan on the shore of Lake Kameyama in Kimitsu, Chiba Prefecture, about 30 minutes via Route 410 from the Kisarazu-Higashi IC on the Ken-O Expressway (reached via the Tokyo Bay Aqua-Line).
Bathing and the onsen
The onsen is a natural, self-flowing hot spring that wells up at over 600 liters per minute from 2,000 meters underground - a chocolate-colored sodium chloride-bicarbonate spring (pH 8.7, source temperature 26.4°C) colored by ancient plant matter (humus). The men's bath has a communal bath overlooking Lake Kameyama (sized for 12-13 people) plus a cold source-water bath at 26.4°C, while the women's bath, though somewhat smaller, has a lukewarm tub for children, making it ideal for a child's first onsen experience. Both communal baths are open all night, from 11:30 a.m. to 9 a.m. the next day. For private bathing, the hotel offers the newly opened private-hire open-air bath with a superb view, Ukameno-yu, and the private-hire semi-open-air baths Kameraku-no-yu and Yuraku-no-yu (the latter with a small barrel tub just for children).
Baby and kids' services
Certified as a 'Welcome Baby' inn by the Miki House Child-Rearing Research Institute. The hotel has a playroom (with a ball pit and picture books). Kids' gear on hand includes a Bumbo seat, a toilet training seat, a baby futon (free rental), a diaper bin, a humidifying air purifier, and children's yukata (with jinbei available in size 80 cm), slippers, tableware, and bibs. The hotel also warms baby food, offers rice porridge, and sterilizes baby bottles.
Other
As a member of the Pink Ribbon Onsen Network, the hotel offers free rental of a dedicated shawl for guests who have undergone breast cancer surgery. Nearby sightseeing spots include Mother Farm (about 35 minutes by car), Kamogawa Sea World (about 25 minutes by car), Roman no Mori (about 25 minutes by car), Tokyo German Village (about 40 minutes by car), and Ichihara Elephant Kingdom (about 45 minutes by car). Late checkout is available until 11 a.m. for JPY 2,200 per person.
Access & Information
| location_onAddress | 65 Toyoda, Kimitsu, Chiba 292-0523 |
|---|---|
| directions_carAccess | About 30 minutes toward Kamogawa via Route 410, from the Kisarazu-Higashi IC on the Ken-O Expressway (reached via the Tokyo Bay Aqua-Line). |
| trainNearest station | Kazusa-Kameyama Station |
| local_parkingParking | Two EV charging stations; covered parking available; free parking for up to 50 cars. |
| callPhone | +81-439-39-2121 |
| paymentsCards | VISA, JCB, American Express, Diners Club, UC, DC |
| languageOfficial site | https://www.kameyamaonsen.jp/open_in_new |
Reference price as of August 8, 2026 (stay date 2026-08-29). Please check the booking site for actual rates.
Frequently Asked Questions
Does the hotel offer a real onsen experience for babies and toddlers?
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Yes. The women's bath has a small, lukewarm tub just for children, and baby beds are provided in both the men's and women's changing rooms, making this a good place for a child's first onsen. The communal baths are open all night, from 11:30 a.m. to 9 a.m. the next day.
Is a baby futon provided in the room?
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Yes, a baby futon is available to borrow free of charge (quantities are limited). Rooms are Japanese-style tatami or Japanese-Western combination rooms, some large enough for three generations or two families staying together.
Can we use the private-hire baths with kids?
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Yes. The hotel has private-hire baths including the open-air Ukameno-yu and the semi-open-air Kameraku-no-yu and Yuraku-no-yu, the last of which has a small barrel tub just for children. Guests on the Welcome Baby plan get a 60-minute private-hire bath session as a plan perk; on other plans, private-hire baths cost extra and require reservation.
Is baby food or bottle support available?
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Yes. The hotel can warm baby food you bring in, prepare rice porridge, and sterilize baby bottles. Note that some official-site pages describe the rice-porridge service inconsistently, so it's worth confirming with the hotel before you book.
What age is the kids' meal menu for, and can allergies be accommodated?
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The kids' lunch/dinner menu is intended for children from about age 5 (elementary-school-age children should be counted in your party's headcount). For allergies or food preferences, fill out the hotel's advance inquiry sheet and contact them directly; they will accommodate ingredient substitutions where possible.
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Information on this page was compiled by directly consulting Official website, Rakuten Travel, Jalan (last verified: August 2026). Prices, availability and seasonal operations change — please check each booking site for the latest information.
We take care to keep information accurate, but always confirm the latest details on the hotel's official site and booking sites before you book or visit.