Reference price as of October 12, 2026 (stay 2026-11-07). US$ is an approximate conversion from yen. Check the booking site for actual rates.
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forumWhat families say
Rakuten Travel rating 4.48 out of 5 (2,112 reviews). One family traveling with a child aged 1 year and 3 months reports that having onsen water in the room meant they could bathe whenever they liked, with peace of mind, and spend their stay at an unhurried pace. Guests also praise the care shown to families, such as staff learning children's names and seating them apart from other guests at mealtimes. Some note that the water in the communal bath runs hot, and recommend using the bath in the room for small children.
Kids Facilities
Private-hire bath
Private-hire bath
A private-hire open-air bath looking out over the Sea of Japan, where a family can enjoy the onsen on their own without using the communal bath. Reservations are taken at check-in, and each session lasts 45 minutes. It is open from 3 p.m. to 11 p.m.
- •Reservations are taken at check-in
- •Each session lasts 45 minutes
Meals in a private room
Meals in a private room
Both breakfast and dinner can be taken in a private room, so families can enjoy their meal without worrying about those around them if a child gets fussy or noisy. Breakfast is a Japanese set menu served at a time you choose from 7:30, 8 or 8:30 a.m.
Free co-sleeping for young children
Free co-sleeping for young children
- paymentsPrice:Free for guests
On most accommodation plans, one child per adult co-sleeps at no charge, provided the child uses neither meals nor futon bedding. Plans with child rates are also available.
- •This applies only when the child uses neither meals nor futon bedding
- •The conditions described vary by accommodation plan
Categories
Overview
Seiyunso is a small onsen ryokan with 13 rooms in Senami Onsen in Murakami, Niigata. Every guest room looks out over the Sea of Japan, and the communal baths, open-air baths and private-hire bath all use natural onsen water drawn from the source: the private-hire bath flows directly from the source, while the communal baths and open-air baths use both water flowing directly from the source and recirculated water. Children can stay, and the accommodation plans set child rates and let one child per adult co-sleep free of charge. Meals can be taken in a private room. The ryokan is about a 5-minute drive from the Murakami-Senami-Onsen IC, and no childcare service is offered.
Rooms
The main building has 10 rooms in total: 3 Japanese-style tatami rooms, 4 Japanese-Western rooms, 1 Japanese-Western room with a view bath, 1 special room with a view bath, and 1 VIP suite. Every one of them has an ocean view. Kakairo, a separate annex linked to the main building by a covered corridor, holds 3 maisonette-style Japanese-Western rooms with twin beds in a loft, bringing the property to 13 rooms in all. In the Japanese-Western rooms, the twin beds are set by the window looking out to sea. Most accommodation plans take 2 to 5 guests per room and have child rates. One night with two meals starts at 18,000 yen per person before tax, based on 2 guests sharing a room; the special room with a view bath starts at 31,000 yen before tax, and the VIP suite with a view bath starts at 41,000 yen before tax.
Dining
Dinner is a kaiseki course built around seafood landed at local ports such as Iwafune Port, with each dish prepared carefully one at a time. Some plans feature Murakami beef, now a nationally known brand, with a choice of tobanyaki (grilled on a ceramic plate), shabu-shabu or sukiyaki. Both breakfast and dinner can be taken in a private room, and breakfast is a Japanese set menu served at a time you choose from 7:30, 8 or 8:30 a.m. For families who would rather eat without worrying about other guests, a private dining room makes mealtimes much easier.
Baths and Onsen
The bath building, Kagoyu Sorinan, has communal baths and open-air baths looking out over the Sea of Japan, 2 of each. The spring water is a sodium chloride spring, said to be beneficial for joint pain, muscle pain and similar complaints. The communal baths and open-air baths use both water flowing directly from the source and recirculated water. There is 1 private-hire bath, open from 3 p.m. to 11 p.m., reserved at check-in for a 45-minute session. The Japanese-Western room with a view bath, the special room and the VIP suite each have their own view bath supplied with Senami source water. Every room in the Kakairo annex has its own open-air bath and indoor bath, both using source onsen water.
Family-Friendly Features
Children can stay here. Child rates are set for the accommodation plans, and on most plans one child per adult can co-sleep free of charge, as long as the child has no meals and no futon bedding. Because meals can be taken in a private room, families can spend the meal with their children without worrying about those around them. Booking the private-hire bath lets a family enjoy the onsen on their own without using the communal bath. In summer, guests can go down to the swimming beach in front of the ryokan by its own stairway, and walk back and forth in their swimwear. No childcare service is offered.
Access
The ryokan is about 5 minutes by car from the Murakami-Senami-Onsen IC on the Nihonkai-Tohoku Expressway. From Murakami Station on the JR Uetsu Line, it is about 8 minutes by taxi or about 12 minutes by public bus. A shuttle to and from Murakami Station is available if you contact the ryokan in advance. Parking is available for 30 cars at no charge, with no reservation needed.
Access & Information
| location_onAddress | 1-2-85 Senami Onsen, Murakami, Niigata 958-0037 |
|---|---|
| directions_carAccess | About 5 minutes from the Murakami-Senami-Onsen IC, and about 10 minutes by car from Murakami Station, with a shuttle available. |
| trainNearest station | Murakami Station |
| local_parkingParking | Parking for 30 cars is available free of charge, and no reservation is needed. |
| callPhone | +81-254-52-1766 |
| paymentsCards | VISA, JCB, UC |
| languageOfficial site | http://www.seiunsou.com/open_in_new |
Map
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Reference price as of October 12, 2026 (stay 2026-11-07). US$ is an approximate conversion from yen. Check the booking site for actual rates.
Check rates & availability
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Frequently Asked Questions
What ages is Seiyunso 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.
Is there parking at Seiyunso?
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Parking: Parking for 30 cars is available free of charge, and no reservation is needed.
How do you get to Seiyunso?
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About 5 minutes from the Murakami-Senami-Onsen IC, and about 10 minutes by car from Murakami Station, with a shuttle available.
Is co-sleeping free for children?
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Child rates are set for the accommodation plans, and on most plans one child per adult can co-sleep free of charge, as long as the child has no meals and no futon bedding.
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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: 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.
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