It is a resort in blue.


Lake Tazawa Mizusawa Hot Springs

Mizusawa Onsenkyo (hot spring village) is nestled in the foothills of Mt. Akita Komagatake and overlooks Lake Tazawa. Many notable spots are within easy reach, including Kakunodate, famous for its samurai residences and cherry blossoms, Koiwai Farm, popular with children, and the hidden hot springs of Nyuto and Tamagawa Onsen.

Lake Tazawa Mizusawa Hot Springs

Luxurious moments that accompany the four seasons

The Cerulean Resort AONI is one of the largest resorts in Mizusawa Onsenkyo. The 100% spring water is flowing hot, and the guests are treated to Japanese-style kaiseki cuisine prepared with local and seasonal delicacies. We have a wide range of guest rooms, from Japanese-Western style rooms, which were renovated in 2021, to Japanese-style and Western-style rooms, which can be used for a variety of purposes, including travel with someone special or family members, and for group use.

Open-air bath (Shusen-no-yu)

Hot Springs

Fresh greenery in spring, starry skies in summer, autumn leaves in fall, and snow-viewing baths in winter.Enjoy the beauty of the four seasons in our flowing hot spring water that is rich in methaquinic acid, which has gained notice as a cosmetic ingredient. You can also use the private baths at the adjacent "Aoni-sanso".

Service Hours

Large bathhouse with open-air bath
Hosen-no-yu and Shusen-no-yu

15:00 ~ 24:00 and 5:00 ~ 9:00 the following day

Gender exchange system

Reservable private bath

15:00 ~ 23:00

last entry at 22:00

50 min. per visit /
reservations accepted upon check-in /
entrance fee required

One-day bathing

11:00 ~ 21:00

last admission at 20:00 /
Mondays and Tuesdays from 14:00

Opening hours are subject to change /
with entrance fee

An example of dinner


Enjoy Japanese kaiseki cuisine, local cuisine, and local sake made with seasonal wild vegetables, seafood, and other Akita ingredients, and plenty of Akita's famous brand beef and brand pork. As an option, you can also enjoy sushi freshly made by our artisans.

An example of breakfast


We have the highest standards for our rice which forms the basis of our breakfast. We carefully select "Akita Komachi" rice grown in a good soil environment, grind the rice in the running water (soft water) of Mt. Akita Komagatake, and cook it over high heat.

Dining hours

Dinner 18:00 ~ 20:30(LO20:00)
Breakfast 7:30 ~ 9:00

Cerulean suite

Guest rooms

We have a wide range of rooms, including Japanese-Western style rooms renovated in 2021, relaxing Japanese-style rooms, and modern Western-style rooms. We will make your stay comfortable and memorable. We also have handicap and elderly accessible rooms for both our Japanese-style and Western-style options.


Yukata, towel, bath towel, toothbrush, hairbrush, shaver, etc.

Overnight stay
Check-in and checkout service hours

Check-in / 15:00 ~ 18:00
Check-out / ~ 10:00 a.m.


Lake Tazawa Mizusawa Hot Springs
Cerulean Resort AONI

  • 73-13, Shimotakano, Tazawako-Obonai Senboku-city, Akita, JAPAN
  • Phone. +81-(0)187-46-2006
    Fax. +81-(0)187-46-2776(JAPAN)
  • Free parking(40Cars)

From Morioka IC (Highway inter change), 60mins by car.


From Akita airport, 110mins by a share taxi called “Airport liner” to Mizusawa Onsen village.

Click here for information on the Airport Liner▶Click here for details

You will need to make a reservation in advance.
Please make a reservation by 12:00 on the day before you will use this service.


From JR Tazawako station, take Ugo-transport / Nyuto Line bus, after about 25mins get off at “Mizusawa-onsen-kyo (Mizusawa onsen village)” bus stop, then walk for 3mins.

Ugo Kotsu Timetable▶Click here for details

Please click on Nyuto Line from the map of the Lake Tazawa/Hachimantai area in Ugo Kotsu.