Shima Onsen Toshimaya
Reference price as of September 12, 2026 (stay date 2026-10-03). Please check the booking site for actual rates.
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forumWhat families say
Rakuten Travel rating 4.49 out of 5 (981 reviews). Guests praise how clean the ryokan is inside and out, and the polite, attentive service from the staff. Some describe the portions at meals as on the small side, while reviews from families who actually stayed stand out for saying there was plenty to eat. One family traveling with a 6-year-old did say they would have liked a few more items on the children's menu.
Kids Facilities
Baby gear set up in your room
Baby gear set up in your room
- paymentsPrice:Free for guests
A nap futon, an air purifier, a diaper bucket, a Bumbo baby seat, a microwave baby-bottle sterilizer, a nursing kettle, a steam humidifier and outlet covers are set up in the room. Used diapers can be left behind when you go home. The humidifier and the air purifier are lent free of charge.
- •Anything you are short of can be arranged as a rental after talking with the ryokan
Baby gear at the communal baths and private-hire baths
Baby gear at the communal baths and private-hire baths
A baby bath, baby body soap and a Bumbo baby seat are provided at the communal baths and the private-hire baths to help at bath time. At the 2 private-hire baths, you can enjoy the onsen just with your family, baby and all, without worrying about other guests.
- •The private-hire baths must be reserved in advance or at check-in (fee applies)
- •Oiwa-buro 3,000 yen for 60 minutes / Chashitsu-buro 2,000 yen for 60 minutes
- •The private-hire baths can be used from 3 p.m. to 10 p.m.
Bringing your own baby food and borrowing tableware
Bringing your own baby food and borrowing tableware
- paymentsPrice:Free for guests
You are welcome to bring meals for a baby who needs baby food, and forks, spoons and bowls are available to borrow. The room has a nursing kettle that heats water to a comfortable temperature and a kettle that can be set to 60 °C. Children in a category without meals are lent a small sharing plate.
Children's kaiseki, the private dining room and in-room dining
Children's kaiseki, the private dining room and in-room dining
Children in the lower grades of elementary school and children under school age are served a children's kaiseki course. Meals are normally taken in the semi-private dining area; the single private dining room seating up to 6 guests requires an advance reservation and costs an extra 2,000 yen per person, and in-room dining is available for 2,000 yen per person. The steak plan cannot be served in the room.
- •The private dining room requires an advance reservation
- •The number of guests who can dine in the room differs by room type, so an inquiry to the ryokan is needed
Okuizome plan for babies
Okuizome plan for babies
A plan that prepares an okuizome (first-meal celebration) tray to mark a milestone for babies aged 3 to 4 months. You stay in a room with an open-air bath fed by 100% spring water straight from the source, and extra bath towels are laid out. A 500 ml bottled drink for each guest and a kettle that can be set to 60 °C are set up in the room.
Rooms with an open-air bath and Japanese-style tatami rooms
Rooms with an open-air bath and Japanese-style tatami rooms
The special room Hagi is a Japanese-Western room with tatami beds and a living area, sleeping up to 6 guests, and Fukujuso is a 12.5-tatami Japanese-style tatami room for up to 5 guests. The in-room open-air baths run straight from the source, so the family can bathe on their own without going to the communal baths. Mansaku and Rindo are on the first floor and are the rooms closest to the communal baths.
- •Five types, Shakunage, Ho, Botan, Odamaki and Yamabuki, cannot be used by guests with children
- •There is no elevator in the building, so you move around by stairs
Categories
Overview
Shima Onsen Toshimaya is a hot-spring ryokan of 15 rooms standing along the Shima River. It has three of its own spring sources, and 100% straight-from-the-source onsen water, neither heated, diluted nor recirculated, fills every bath here: the communal baths, the private-hire baths and the rooms with an open-air bath. The guest rooms come in 10 types, mainly Japanese-style tatami rooms, and a room with an open-air bath lets you soak just with your children. For families with babies, nap futons, a diaper bucket, a baby-bottle sterilizer and more are set up in the room, and you are welcome to bring your own baby food. Do note that there is no elevator in the building, and that five room types, Shakunage, Ho, Botan, Odamaki and Yamabuki, cannot be used by guests with children.
Rooms
The 15 guest rooms come in 10 types, from rooms with an open-air bath looking out on the spectacular Shima River to compact twin rooms. The special room Hagi is a 10-tatami Japanese-style twin bedroom with tatami beds and a living area, sleeping up to 6 guests. Fukujuso is a 12.5-tatami Japanese-style tatami room for up to 5 guests, and Kikyo, Tsuwabuki and Tsubaki are 10-tatami Japanese-style tatami rooms with an open-air bath for up to 4 guests each, all roomy enough for a family. Mansaku and Rindo are river-side Japanese-style tatami rooms with a small ceramic open-air bath on the terrace; both are on the first floor near the entrance and are the rooms closest to the communal baths. Sankirai is a fourth-floor room with a 10-tatami Japanese-style area, Simmons twin beds and a large sofa; guests who have trouble walking are asked to refrain from this room, and with all the stairs involved it is demanding for families with small children. Five types cannot be used by guests with children, as stated in the room descriptions on Rakuten Travel: the corner room Shakunage, the Japanese-style twin Ho, Botan and Odamaki with their view terraces, and the smaller 6-tatami river-side room Yamabuki. Shirayuri and Hozuki, in the wooden building, have less sound insulation than the rooms in the reinforced-concrete building, and in Hozuki a neighboring television or conversation can be slightly audible at times. There is no elevator in the building, so you move around by stairs.
Dining
Dinner and breakfast are both served at Takamura, a semi-private dining area designed to evoke a kawadoko (a dining platform set over a river). There is a single private dining room seating up to 6 guests, which requires an advance reservation and costs an extra 2,000 yen per person; it suits families who want to eat together without worrying about other guests. In-room dining is available for 2,000 yen per person, and since the number of guests it can take differs by room type, please confirm with the ryokan. The steak plan cannot be served in the room. As for children's meals, those in the upper grades of elementary school pay 70% of the adult rate and are served smaller adult portions at dinner and breakfast, while children in the lower grades of elementary school and children under school age pay 50% of the adult rate and are served a children's kaiseki (a multi-course Japanese meal) at dinner and breakfast. For children under school age there are also categories with meals only, bedding only, or neither meals nor bedding, and children in a category without meals are lent a small sharing plate. Food allergies are discussed when you book; because even an accommodated meal is prepared in the same kitchen as all other ingredients, it is a low-allergen meal rather than one with the allergens completely removed. If symptoms are severe you can ask about bringing your own food, though a booking may also be declined.
Baths and Onsen
The ryokan has three of its own spring sources, and 100% straight-from-the-source onsen water, neither heated, diluted nor recirculated, fills every tub on the property, from the communal baths to the private-hire baths and the rooms with an open-air bath. The communal baths, Yakuo no Yu, are two baths named Zuiun and Reiho, available from 3 p.m. until 9:30 the next morning, with the men's and women's baths swapping at 10 p.m. There are 2 private-hire baths: the cave-like Oiwa-buro and the Chashitsu-buro on a guest-room floor. They can be used from 3 p.m. to 10 p.m. and must be reserved in advance or at check-in. The rates are 3,000 yen for 60 minutes for the Oiwa-buro and 2,000 yen for 60 minutes for the Chashitsu-buro, and they give the family an unhurried stretch of time in the water together with a baby. The spring water is a sodium and calcium chloride sulfate onsen. Whether children who are not yet out of diapers may get into the communal bath tubs is not stated, so please confirm.
Family-Friendly Features
Guest rooms are set up with a nap futon, an air purifier, a diaper bucket, a Bumbo baby seat, a microwave baby-bottle sterilizer, a nursing kettle, a steam humidifier and outlet covers. Used diapers can be left behind when you go home. You are welcome to bring your own baby food, and forks, spoons and bowls are available to borrow. Anything you are short of can be arranged as a rental after talking with the ryokan. The communal baths and the private-hire baths are stocked with a baby bath, baby body soap and a Bumbo baby seat. There is also a plan that prepares an okuizome (first-meal celebration) tray for babies aged 3 to 4 months. Rakuten Travel's facility information lists a crib among the room equipment, while the ryokan's own list of baby items goes only as far as the nap futon, so if you need a crib it is safest to confirm in advance. The humidifier and the air purifier are lent free of charge. On the plan with benefits available only for guest rooms with a Chashitsu-buro tearoom bath, checkout moves to 11 a.m., leaving more room to get ready in the morning (normal checkout is 10 a.m.).
Access
Take the Kan-etsu Kotsu bus bound for Shima Onsen from Nakanojo Station on the JR Agatsuma Line, get off at the Yamaguchi bus stop, and walk 1 minute. There is parking for 20 cars, free for staying guests and with no reservation needed, and there is also a valet service in which staff take your car if you pull up in front of the entrance.
Access & Information
| location_onAddress | 3887 Shima, Nakanojo-machi, Agatsuma-gun, Gunma 377-0601 |
|---|---|
| directions_carAccess | From Nakanojo Station on the JR Agatsuma Line, take the Kan-etsu Kotsu bus bound for Shima Onsen and get off at the Yamaguchi bus stop; from there it is a 1-minute walk. |
| trainNearest station | Nakanojo Station |
| local_parkingParking | Parking is available for 20 cars, free of charge and with no reservation needed. A standard EV charger is available in the ryokan's parking area, by reservation. |
| callPhone | +81-279-64-2134 |
| paymentsCards | VISA, JCB, Mastercard, Saison, JAL |
| languageOfficial site | https://tosimaya.co.jp/open_in_new |
Map
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Reference price as of September 12, 2026 (stay date 2026-10-03). Please check the booking site for actual rates.
Check rates & availability
Opens the booking site in a new tab.
Frequently Asked Questions
What ages is Shima Onsen Toshimaya best suited to?
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It has facilities that work especially well for babies and toddlers (ages 0 to 2) and children aged 3 and over. There is no age limit, and families with children of any age can stay.
Does Shima Onsen Toshimaya have baby beds?
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Baby beds are available to rent. See the Kids Facilities section on this page for details.
Is there parking at Shima Onsen Toshimaya?
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Parking: Parking is available for 20 cars, free of charge and with no reservation needed. A standard EV charger is available in the ryokan's parking area, by reservation.
How do you get to Shima Onsen Toshimaya?
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From Nakanojo Station on the JR Agatsuma Line, take the Kan-etsu Kotsu bus bound for Shima Onsen and get off at the Yamaguchi bus stop; from there it is a 1-minute walk.
Can a child who is not yet out of diapers use the communal bath?
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Whether children who are not yet out of diapers may get into the communal bath tubs is not stated, so please confirm with the ryokan in advance. The communal baths and the private-hire baths have a baby bath, baby body soap and a Bumbo baby seat, so you can wash your child without getting into the tubs. There are 2 private-hire baths, the Oiwa-buro and the Chashitsu-buro, which your family can use on your own. Guest rooms have a diaper bucket, and used diapers can be left behind when you go home.
Can we bring our own baby food, and can it be warmed?
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You are welcome to bring your own baby food, and forks, spoons and bowls are available to borrow. The room has a nursing kettle that heats water to a comfortable temperature and a kettle that can be set to 60 °C, but nothing is stated about a microwave for warming baby food, so please confirm in advance if you need one.
What time is check-in?
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Check-in is between 3 p.m. and 6 p.m., and checkout is at 10 a.m. On the plan with five special benefits, available only for guest rooms with a Chashitsu-buro tearoom bath, checkout moves to 11 a.m.
Can we eat with our children in a private room or in our own room?
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Dinner and breakfast are both normally served at Takamura, a semi-private dining area designed to evoke a kawadoko (a dining platform set over a river). For an extra 2,000 yen per person you can dine in your room; the number of guests it can take differs by room type, so please confirm with the ryokan (the steak plan cannot be served in the room). The single private dining room seating up to 6 guests can also be chosen, with an advance reservation and 2,000 yen per person.
Are there meal plans to celebrate a child's milestones?
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There is an okuizome plan for babies aged 3 to 4 months, which comes with an okuizome (first-meal celebration) tray and a power-stone teething stone. The dishes are made so that everyone from children to older guests can eat with peace of mind, with the vegetables, seasonings such as miso and even the aperitif made in-house. Children in the lower grades of elementary school and children under school age are served a children's kaiseki course.
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Information on this page was compiled by directly consulting Official website, Rakuten Travel, Ikyu.com (a Japanese booking site), Jalan (last verified: September 2026). Prices, availability and seasonal operations change. Please check each booking site for the latest information.
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