Seikoso

♨️A quiet lakeside inn with pure, untreated free-flowing hot spring water

Gunma · Sarugakyo Seikoso

1

A Quiet Inn on Lake Akaya

• 🏞️A quiet hot spring inn set right in front of Lake Akaya in Sarugakyo Onsen.
• ⛰️Surrounded by the nature of the Tanigawa range and the Mikuni mountains.
• 🏡Seven Japanese-style rooms for up to 44 guests; the whole inn can also be booked exclusively.

2

Free-Flowing Source Baths

• ♨️Every bath is kakenagashi: straight from the source, with no heating, no added water and no recirculation.
• 💧Calcium-sodium sulfate water, known for its softness, said to help neuralgia, muscle pain, poor circulation and fatigue.
• 🕐One large bath each for men and women, open from 14:00 to 9:00 the next morning, with views of Lake Akaya.

3

Private Family Bath

• 👨‍👩‍👧One private bath reserved for families.
• 🧒Families with children can enjoy the hot spring without worrying about other guests.
• 🕐Available from 12:00 to 9:00 the next morning.

4

Lake Views from Every Room

• 🪟Every room faces the lake, with Lake Akaya and the mountains outside the window.
• 🛏️Standard rooms are 8 + 6 tatami, and there is one larger 12 + 8 tatami room.
• 📶Wi-Fi, fridge, safe, TV and a washlet toilet; toothbrushes and towels are in the room, other amenities are at the amenity bar.

5

Meals with Local Ingredients

• 🍲Meals are made with fine local ingredients.
• 🍽️Meals are served in the in-house dining room.
• 🕗The restaurant is open from 8:00 to 21:00.

6

Facilities

• 🌳The corridor windows look out on a Japanese garden; the grounds cover 10,533㎡.
• 🏢A separate training building has three meeting rooms for seminars and meetings.
• 🥤Vending machines are available, and the doors are locked at 22:00.

7

Access & Parking

• 🚄From Tokyo Station, about 75 minutes by Joetsu Shinkansen to Jomo-Kogen Station (about 65 minutes from Niigata Station).
• 🚌From Jomo-Kogen Station, take the Sarugakyo line bus to Sakasazakura-mae, about 20 minutes.
• 🚗About 25 minutes via Route 17 from Tsukiyono IC on the Kan-etsu Expressway; 20 free parking spaces, no reservation needed.

3

Private Family Bath

• 👨‍👩‍👧One private bath reserved for families.
• 🧒Families with children can enjoy the hot spring without worrying about other guests.
• 🕐Available from 12:00 to 9:00 the next morning.

4

Lake Views from Every Room

• 🪟Every room faces the lake, with Lake Akaya and the mountains outside the window.
• 🛏️Standard rooms are 8 + 6 tatami, and there is one larger 12 + 8 tatami room.
• 📶Wi-Fi, fridge, safe, TV and a washlet toilet; toothbrushes and towels are in the room, other amenities are at the amenity bar.

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A small hot spring inn where every bath flows straight from the source and every room looks out on Lake Akaya. Rooms have no private bath, so bathing is in the large baths or the family bath, and check-in closes at 18:00.

#SarugakyoOnsen#MinakamiOnsen#GunmaRyokan#LakeAkaya#Kakenagashi#FamilyBath

* This introduction was compiled from information published by each property (official website and similar sources), so some details may differ from what you find on the day. It is AI-assisted and can contain errors — please check the official website and the details shown at booking before you reserve.

Check In/Check Out Policy · Check In: 15:00 · Check Out: 10:00 · Last Check In: 18:00

* These policies are the property's own text, in English; the cancellation policy shown at booking takes precedence.

From onsen etiquette to check-in — the things worth knowing first.

What are the check-in and check-out times at Seikoso?

Check-in starts at 14:00 and check-out is by 10:00.

Where is Seikoso located?

It is in Kusatsu · Gunma Tone-gun. Address: 1470-9 Aimata, Minakamimachi.

How much does one night cost?

Recent lowest observed rate starts from ₩223,204 per night for two adults. Rates vary by date and room type, so a live search is most accurate.

What is the cancellation and refund policy?

Free-cancellation deadlines vary by rate plan and are shown with each room. Cancelling before the deadline gives a full refund.