Enjoy Aomori’s local flavors and natural Onsen at an all-inclusive Resort Hotel.

Our Accommodation is an all-inclusive Onsen resort where all drinks during your stay and fees for various activities are included in the accommodation rate. Our signature fossil seawater Onsen offers a spectacular setting overlooking the Sea of Japan from every bathing area: the large public bath, open-air bath, and private baths. In our dining venue, enjoy an open-kitchen buffet featuring mainly Aomori ingredients, with seasonal sashimi, premium meat dishes, and seasonal tempura beautifully presented. Savor a luxurious moment that will fill your heart—where ever-changing scenery, breathtaking baths, and exquisite cuisine come together. We sincerely look forward to welcoming you.

  • On our first trip to Aomori, we stayed the night before the Nebuta Festival for the first time, and everything—the meals, drinks, service, and Onsen—was excellent. Our three-generation family was very satisfied when we left. If I had to ask for one thing, a massage chair would make it even better. We were completely satisfied and truly enjoyed Aomori. Thank you very much.

    SHUTAROU 8/8/2026
  • My wife, my mother-in-law, and I stayed here. During the dinner buffet, my mother-in-law started feeling unwell and couldn’t go to the dining area. When the staff heard about it, they kindly told us to pack whatever she liked into a takeaway box so she could eat in our Room—thank you very much. She was truly touched to be able to eat in the Room. The view was great, the sunset was amazing, and the bath was wonderful—everything was excellent. We will come again.

    こやたか 7/27/2026

Facilities and Services

See All
  • Hot spring
  • Spa facility
  • Accessibility
Open-air bath / Free-flowing hot spring / Large public bath / Private bath / Sauna / Free shuttle service
IN15:00~22:00
OUT10:00
Number of rooms80 rooms
PetNot allowed
Your childPermitted

[No Meals Included & Onsen] Perfect for Late Check-ins and Relaxed Sightseeing - All-Inclusive

IN 15:00~22:00
OUT 10:00
¥23,364
No meals ; 2 peopleTax included¥18,704
(USD 117.38)

[1 Night with Breakfast] Perfect for Late Check-ins & Relaxed Sightseeing - All-Inclusive

IN 15:00~19:00
OUT 10:00
¥29,854
Breakfast included ; 2 peopleTax included¥23,894
(USD 149.95)

[No Meals Included & Onsen] Perfect for Late Check-ins and Relaxed Sightseeing - All-Inclusive

IN 15:00~22:00
OUT 10:00
¥25,960
No meals ; 2 peopleTax included¥20,780
(USD 130.41)

[1 Night with Breakfast] Perfect for Late Check-ins & Relaxed Sightseeing - All-Inclusive

IN 15:00~19:00
OUT 10:00
¥32,450
Breakfast included ; 2 peopleTax included¥25,970
(USD 162.98)

[No Meals Included & Onsen] Perfect for Late Check-ins and Relaxed Sightseeing - All-Inclusive

IN 15:00~22:00
OUT 10:00
¥25,960
No meals ; 2 peopleTax included¥20,780
(USD 130.41)

[1 Night with Breakfast] Perfect for Late Check-ins & Relaxed Sightseeing - All-Inclusive

IN 15:00~19:00
OUT 10:00
¥32,450
Breakfast included ; 2 peopleTax included¥25,970
(USD 162.98)

Best-Selling Stays

Accommodation Near Nature, Convenient For Picnics

Recommended Accommodation For Men's Trips

Introduction of the Accommodation

Room
Exterior (Summer)
Japanese-Style Open-Air Bath (Summer)
Exterior (Winter)
Open-air bath (winter)
Western-Style Open-Air Bath (Summer)
Room
Exterior (Summer)
Enjoy a refined, relaxing space infused with cultural charm.

Our spacious, serene Japanese-style rooms and our modern Western-style rooms—elegant, refined, and nostalgically charming—offer the perfect setting for a restful adult getaway. Please relax and enjoy your time here at your own pace. From October 1, 2022, we introduced an all-inclusive stay plan. We invite you to unwind and enjoy a soothing, unhurried escape.

Cuisine
Infusing every dish with heartfelt hospitality

Ajigasawa is blessed with seasonal harvests of local cuisine and seafood throughout the year, allowing us to source fresh ingredients at all times. We carefully prepare Ajigasawa’s finest seasonal ingredients—available only at that time of year—and offer dishes that deliver a truly delicious experience and lasting memories.

Onsen
Natural thalassotherapy benefits: “Fossil Seawater Onsen”

The open-air bath overlooking the majestic Sea of Japan features a rare natural Onsen fed by ancient seawater known as “fossil seawater.” Long ago, seawater trapped deep underground matured over 300,000 years into this restorative spring. Rich in fossil seawater, it has a high salt content that helps retain warmth and moisture, so you stay comfortable longer after bathing—like a natural form of thalassotherapy (marine therapy).

Sample Meal Options
All-Inclusive Information

All Plans at our Accommodation are all-inclusive. Drinks in the lounge and dining venues, as well as fees for various activities, are all included in the accommodation rate. Please enjoy a relaxing and soothing stay.

Yoga
Activities and Various Services

In addition to fishing experiences, bicycle rentals, and yoga, you can enjoy your stay in your own way both on and off the property with options such as private baths and karaoke.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Hot Springs & Baths
    Hot Springs & Baths
  • Facilities & Services
    Facilities & Services
  • Meal
    Meal

Basic Information

TaxesHot Spring Tax (150 yen)
Card information
VISA / MASTER / JCB / AMEX / DINERS / UnionPay / Debit card
Pets
Not allowed
BreakfastOur Japanese and Western buffet—featuring Tsugaru local specialties and freshly made French toast—is highly popular.
Your child
You can stay.
- Junior high school students are treated as adults. - Elementary school children are included in the adult headcount. - Children of elementary school age and younger are exempt from the Hot Spring Tax. - The elementary school rate is 70% of the adult rate. - The admission fee for preschool children is JPY 1,815 (tax included). - Preschool children (meals & futon) are charged 50% of the adult rate (tax included). Preschool children (meals only): JPY 6,215 (tax included). - Ages 0–2: free of charge (Child Sharing Existing Bedding). - Child Sharing Existing Bedding is available for preschool children only.
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Towel · Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • ○ Shower cap
  • ○ Hair dryer
  • ○ Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Nightwear
  • × Bathrobe
  • ○ Slippers
  • ○ facial cleanser
  • ○ Toner
  • ○ Lotion
  • × Makeup remover
  • × Cotton swab
  • × Cotton
  • × Clothing deodorizing spray
  • ○ Refrigerator
  • × Minibar
  • ○ Electric kettle
  • ○ Tea set (free)
  • ○ Television
  • ○ Safe
  • × Scale
  • × Trouser press
  • × Free morning edition
  • × Pay-per-view broadcast
  • ○ Satellite broadcasting
  • × Video on Demand
  • × Radio
  • × CD player
  • × DVD player
  • × Blu-ray player
  • × Speakers for portable audio
  • × In-room PCs and tablets
Facilities and Features
  • ○ Hot spring
  • × Rooms with open-air baths available
  • ○ Open-air bath
  • ○ Free-flowing hot spring
  • ○ Large public bath
  • ○ Private bath
  • ○ Sauna
  • × Ganbanyoku (rock bathing)
  • × Within a 5-minute walk from the station
  • × Within a 5-minute walk to the convenience store.
  • × Indoor pool
  • × Outdoor pool
  • × Pet-friendly
  • ○ Spa facility
  • × Fitness
  • ○ Free shuttle service
  • × Shuttle Service (Paid)
  • × Room service
  • × Room Service Available 24 Hours
  • ○ Barrier-free
  • × Childcare services
Esthetic Massage
Available
Thalasso Pack (Other courses are also available—please contact us for details.) Body: 30 minutes / 6,600 yen Face: 30 minutes / 5,500 yen *Reservation required. *Depending on availability, we may not be able to accommodate your preferred time. *Please check in at least 1 hour before your Reservation time. *Guests with thyroid conditions are kindly asked to refrain from booking. *Guests with skin allergies or who are pregnant may not be able to receive this treatment. Hours: 16:00–22:00
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
05:00~23:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Heating)
Remarks
* Bathing hours are 5:00–10:00 and 15:00–23:00. * The baths alternate between men and women, so you can enjoy both the Japanese-style and Western-style bath areas. * A free-flowing hot spring bath is also available (part of the indoor bath). [Amenities & Facilities] Large public bath: body soap, shampoo, conditioner Changing room: hair dryer, scale ■ For men: razor, hairbrush, facial cleanser, shaving gel, aftershave lotion, hair tonic, cotton swabs. ■ For women: shower cap, hair band, makeup remover, cotton swabs, cotton pads, facial cleanser, toner (lotion), moisturizing emulsion. ■ For children: baby bed/crib; child-sized bath chair; mat; wash basin; stool are available.
Open-air bath
The number of Open-air bath
2
Business Hours
05:00~23:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating)
Remarks
*Bathing hours are 5:00–10:00 and 15:00–23:00. *As the baths alternate between men and women, you can enjoy both the Japanese-style and Western-style bath areas.
Private bath
The number of Private bath
2
Business Hours
08:00~23:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating)
Remarks
[Available Hours] 8:00–10:00, 15:00–23:00 (last admission 22:00) [Usage Time] 45 minutes *Guests staying at our Accommodation may use this service at no additional charge. *Reservations can be made after check-in via the in-house Reservation system. *In principle, advance Reservations are not accepted.
Spring quality and benefits

Strong chloride saline spring

Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, sprains, chronic digestive disorders, sensitivity to cold, recovery after illness, fatigue recovery, and health promotion

※Regarding the notation of "Gensen Kakenagashi"
In some facilities, heating or adding water for temperature adjustment may be performed. Additionally, please note that in some parts of the facility, the hot spring water may not be free-flowing from the source. For more details, please contact each facility.

SaunaAvailable
Hot stone spaNone
OthersFree Wi-Fi is available throughout the property.
About Hygiene Measures
To help all guests stay with greater peace of mind, we have enhanced our services with two key measures: thorough hygiene management and avoiding the “Three Cs” (closed spaces, crowded places, and close-contact settings). During guest service, cooking, and cleaning, our staff work while wearing masks and gloves and practicing frequent handwashing. We also thoroughly disinfect with alcohol when entering and leaving the staff entrance. *Details are available on our official website. [For Guests Staying Overnight] - If you develop a fever or feel unwell, please contact the front desk without leaving your Room. - Thermometers are available. Please ask at the front desk or speak to a nearby staff member. [Specific Infection Prevention Measures] - Managing guest flow to avoid crowding during check-in/check-out - Preventing infection in areas used by many guests at the same time (lobby, large public bath, dining areas/restaurants) - Installing hand-sanitizing stations at entrances and throughout the Facility - Ventilating Facilities and guest Rooms - Regular disinfection within the Facility ■ Common measures across all areas/situations - Minimize shared items and frequently touched points as much as possible. - Regularly disinfect areas touched by multiple people. - Items that may touch hands or mouths (cups, chopsticks, etc.) are properly washed/disinfected or replaced with disposable items as appropriate. - Uniforms and clothing are washed frequently. - Thorough handwashing and hand sanitizing. - Alcohol sanitizer is placed throughout the Facility for guests and staff to use at any time. - We implement preventive measures assuming there may be asymptomatic carriers among guests or staff. ■ Upon entry (lobby area) - Hand-sanitizing stations (alcohol sanitizer, etc.) are installed at entrances and in the lobby. - Guests are asked to sanitize their hands upon entry. ■ Check-in / Check-out - Frequent disinfection of the front desk counter, pens, etc. - Thorough disinfection of returned Room keys - Disinfection of Room keys after return - Contactless check-out procedures via card payment ■ Elevator -Frequent wipe-down disinfection inside elevators and on buttons ■ Guest Rooms -Wipe-down disinfection *Including TV/air-conditioning remote controls; safe; light switches; lamps; low tables; closets; refrigerator; telephone; toilet; faucets; slippers; etc.* -Wipe surfaces using disinfectants (detergents/bleach agents) during Room cleaning *Including hair dryers, floor chairs/cushions, slippers, etc.* -Cups/teapots/tea cups are replaced with disinfected items. Used amenities are discarded. -Rooms are ventilated by opening windows at regular intervals. -In case of room-sharing with someone outside your household group (where applicable), we take care to obtain consent from all parties. ■ Large Public Bath -Wipe-down disinfection of doorknobs etc.; request that guests bring clean towels from their Rooms -Wipe-down disinfection of amenities/equipment -Increased ventilation in bathing areas -Wipe-down disinfection of equipment such as hair dryers; request that guests bring personal cosmetics/brushes where possible -Strive to keep rest areas ventilated at all times -Regularly disinfect shared items (tables/chairs) -Cooperation requested for wipe-down disinfection after use of equipment (sofas/massage machines/scales) -Regular wipe-down disinfection of buttons on water/beverage service machines ■ Banquet Hall -Thorough handwashing or hand sanitizing upon entry -Thorough disinfection before events begin and after they end (floor cushions/floor chairs/armrests/trays/tables) -Increased ventilation -No pouring drinks for others or sharing cups -Hot pot dishes/sashimi platters changed to individual portions where possible; served/plated by staff -Food is not served while clearing dishes -Thorough handwashing/hand sanitizing after clearing dishes ■ Restaurant Amour -Thorough handwashing or hand sanitizing upon entry -Wipe-down disinfection of equipment/items each time they are used -Increased ventilation -Hot pot dishes/sashimi platters changed to individual portions where possible -Thorough handwashing/hand sanitizing after clearing dishes -Disinfection of tables etc. after meals ■ Cleaning Operations (Staff handling futons/bedding) -Masks worn; used linens stored sealed (Room cleaning) -Masks worn during cleaning / disposable gloves worn -All used yukata robes/in-room slippers etc. are washed/disinfected -Sealed storage for used towels followed by washing/disinfecting -Trash is treated as potentially contaminated waste: sealed in plastic bags for disposal (Bath area cleaning) -Wipe-down disinfection of bathroom facilities/equipment/items -Ventilation during cleaning with complete air exchange -Wipe-down disinfection in changing rooms including inside lockers -Sealed storage for used towels followed by washing/disinfecting (Indoor common-area cleaning) -Cleaning using commercially available detergents containing surfactants or bleach agents -Door handles/elevator buttons/stair railings/lobby furniture/shared computers etc. are regularly wiped down with alcohol sanitizer. -Floors/walls not touched by hands can be cleaned normally. ■ Toilets (*special attention due to higher risk*) -Toilet bowls can be cleaned normally. -Areas touched by unspecified numbers of people will be wiped down/disinfected. -Signs instruct guests to close lids before flushing. -Paper towels provided or personal towels prepared. -Hand dryers stopped; shared towels prohibited. -Attention paid to continuous ventilation. [Multiple Night Stay Cleaning Information for Guests Staying 2 Nights or More] To reduce environmental impact, we do not change sheets or collect trash for stays of 2 consecutive nights. The Room will be stocked with enough towels for your stay. For stays of 3 nights or more, standard Room cleaning will be provided on the third night/day. If you do not require cleaning, please inform the front desk by 9:00 AM on that day.

Reviews

Overall Score
4.36
Good (40)
  • Rooms & Amenities
    4.30
  • Facility
    4.30
  • Hospitality & Service
    4.40
  • Meals
    4.27
  • Onsen & Bath
    4.48
  • Satisfaction
    4.40

*Reviews that have been translated from Japanese.*

*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*

Access Information

Address
Aomori Prefecture1 Naruto, Aza, Maito-machi, Ajigasawa-machi, Nishitsugaru-gun
TEL:+81-173-72-8111

■By car: About 40 km (approx. 50 minutes) via National Route 101 from Namioka IC on the Tohoku Expressway.
■By JR Tohoku Shinkansen (arrive at Shin-Aomori Station) or by air (JAL, arrive at Aomori Airport).

A free Shuttle Service is available between JR Gono Line Ajigasawa Station and Hotel Grandmer Sankaiso. Please make a Reservation by the day before use.

Parking Information
Fee
Free for guests
Parking time
Check-in to check-out
Parking space
No restrictions
Number of parking spaces
200 cars available outdoor
Valet service
Unavailable

Pickup and drop-off information
Available (Free)We offer a free Shuttle Service between JR Gono Line Ajigasawa Station and Hotel Grand Mer Sankaiso.
5 departures: 14:50, 15:50, 16:20, 17:25, 18:00

*Please make a Reservation by the day before use.
*The bus stops via our sister Accommodation, Ajigasawa Onsen “Suigun no Yado.”

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