Overview

Hotel Grand Mer Sankaiso welcomes you to Ajigasawa Onsen in Aomori Prefecture, a coastal retreat at the base of the Shirakami-Sanchi World Heritage Site. From your room, you can gaze across the Japan Sea all the way to Hokkaido. This unique setting lets you enjoy both mountain and ocean views in one breathtaking location.

At this hot spring hotel, your stay includes more than just a room. All-inclusive plans cover beverages and activities, so you can truly relax without thinking about extras. Soak in ancient fossil seawater baths, unwind with seaweed thalassotherapy, and end your evening with a live Tsugaru shamisen performance.

Whether you’re here to enjoy local cuisine, scenic views, or cultural experiences, Hotel Grand Mer Sankaiso gives you an unforgettable Aomori escape.

Accommodation

Each room at Hotel Grand Mer Sankaiso is designed to make your stay comfortable and peaceful. Whether you choose a Japanese-style room or a Western-style bed, you’ll feel the charm of a hot spring hotel with a touch of Taisho-era romance.

Wake up to the sound of waves and fall asleep under star-filled skies. The hotel sits above the coast, giving you panoramic views of the Japan Sea. You can relax in a spacious room after a long soak or a walk through the nearby forests.

Rooms include all the essentials for a restful stay: a bath and toilet, air conditioning, tea set, refrigerator, and free Wi-Fi. Yukata and amenities are ready for you to use during your stay.

Dining

At Hotel Grand Mer Sankaiso, you can enjoy meals crafted from the freshest mountain and sea ingredients. The chefs bring out the full flavor of each ingredient, creating dishes that reflect the seasons and local traditions.

Dinner includes a full range of beverages at no extra cost. Pour yourself a glass of local sake, try regional cider, or enjoy a classic beer or wine. The staff encourages you to explore flavors and combinations you might not try elsewhere.

In the morning, head to the lounge for coffee and soft drinks. Whether you’re an early riser or like to take it slow, you’ll start the day refreshed.

Onsen and Wellness

The hot springs at the hotel flow with fossil seawater from 300,000 years ago. This mineral-rich water helps restore tired muscles and smooth your skin. After a soak, you can treat yourself to a seaweed thalassotherapy pack, using natural elements from the ocean to relax your body.

If you want privacy, the hotel offers private baths that you can reserve on the day of use. These baths are free to use and available for 45-minute sessions. Relax with your travel companions in complete comfort and quiet.

Guests with Tattoos

If you have tattoos, you can use the private baths without concern. These baths offer a welcoming space where you can enjoy the hot spring experience fully and comfortably.

Facilities

Afternoon Lounge: Open from 3:00 p.m. to 11:00 p.m. and offers alcoholic beverages like sake, beer, and wine, along with soft drinks and Shirakami mountain water.

Morning Lounge: Open from 8:00 a.m. to 9:45 a.m., serving soft drinks and coffee to start your day.

Live Entertainment: Enjoy a live Tsugaru shamisen and folk song talk show every night at 8:30 p.m. in the 1st floor lounge.

The hotel’s common areas are cozy and warm, designed to help you slow down and enjoy the moment.

Activities

Hotel Grand Mer Sankaiso puts you near some of Aomori’s most exciting seasonal attractions:

• Spring: Visit Hirosaki Castle for Japan’s most spectacular cherry blossom festival. With over 2,600 cherry trees, it’s a must-see in full bloom.
• Summer: Watch towering floats parade through Goshogawara during the Tachineputa Festival. Each float stands over 20 meters tall and weighs several tons.
• Summer & Autumn: Explore Shirakami-Sanchi and the magical Aoike pond. The beech forests glow with summer green and transform into stunning colors in autumn.
• Autumn: Pick fresh apples at Hirosaki Apple Farm, a fun and tasty seasonal outing.
• Winter: Ride the retro Tsugaru Railway Stove Train. Roast squid over a charcoal stove while admiring the snowy landscape.
• Winter: Experience the Drifting Snow Tour in Kanagi-machi. This tour shows you snowdrifts rising up from the land—a rare and thrilling sight.
• Winter: Ride the Hakkoda Ropeway to see Japan’s best frost-covered trees. These snow monsters form into surreal shapes around January and February.

Whether you’re visiting in spring, summer, fall, or winter, there’s always something memorable to explore nearby.

Additional Features

• Free beverages included with meals and lounges
• Private baths available at no extra cost
• Daily live shamisen performance
• Free Wi-Fi in all rooms and public areas
• Panoramic ocean views from most rooms
• Convenient access to seasonal activities and sightseeing
• Comfortable lounge areas for day and evening relaxation