A quiet
seaside resort
BEACHSIDE ONSEN RESORT UMI ｜ Kyonan, Minami-Boso, Chiba
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Feel time pass with the view of the sea
UMI, a beachside onsen resort in Minami-Boso, is about 90 minutes by car from Tokyo. The sea spreads out right in front of you and the sandy beach is about a 30-second walk away. Seafood cuisine made with fish landed that very day, and guest rooms that all face the ocean. Slip easily into resort mode; a different kind of time is waiting for you.
Every room with an ocean view
In the rooms with an open-air bath, enjoy a private hot spring time in a spacious in-room tub.
Truly fresh-caught:
a feast of select seafood
The Kyonan coast, where Kinokuniya is located, is an exceptional fishing ground where the Kuroshio Current mixes with nutrient-rich water from Tokyo Bay, landing a wide variety of high-quality fish all year round. For our sashimi we use only local fish landed by the fixed nets of Katsuyama and Hota. Our menus incorporate seasonal local ingredients and change with the seasons; spring, summer, autumn or winter, savour a different side of Boso's cuisine with every visit.
See our cuisine
Five private baths and
gender-separated shared baths
Enjoy a healing soak in complete privacy. The spring is a sodium-chloride strong salt spring. The large baths, private baths and in-room open-air baths all use natural hot spring water (only the indoor bath of the 3F Premium Room with Open-air Bath uses heated water).
See our baths
A terrace lounge
in the sea breeze
The Terrace Lounge on the 2F Seaside Terrace is an open space with a pleasant sea breeze. Take in the view or listen to the waves; in this open space the sea is close at hand. Sit back on a sofa and enjoy the resort mood.
See the facilities
Bar Lounge
The dessert and tea served at the end of your meal can be enjoyed in the 2F lounge. At the bar counter our bartender serves a range of drinks, cocktails, sake and shochu, as well as original creations (charged). Between 15:00 and 17:00, welcome sweets and drinks are served.
See the facilitiesA day at UMI
15:00
Check-in
Check-in is from 15:00 to 18:00. On arrival, reserve your private bath at the front desk.
15:00
Welcome sweets
Between 15:00 and 17:00, welcome sweets and drinks are served in the 2F Bar Lounge.
15:20
Private baths
Misaki, Nagisa, Tsuki and Yoshimi: 15:20–24:00, free of charge, 40 minutes per session. The rooftop jacuzzi bath "Umi": ¥3,300 per 40-minute session.
17:30
Dinner
At Dining "UMI", in a semi-private room with open views or in a private room.
20:30
Bar Lounge
Open 20:30–23:00 (last order 22:30). Our bartender serves a range of drinks, cocktails, sake and shochu, as well as original creations (charged).
8:00
Breakfast
A carefully selected seasonal Japanese breakfast, featuring fragrant, richly flavoured Nagasa rice.
10:00
Check-out
Check-out is at 10:00 (11:00 for rooms with an open-air bath).
Our recommended plans
Rates and plans are shown on our online booking site.
Per person from¥21,800~
*Rates vary by season, number of guests and plan. Please see the plan list for current rates.
A seaside holiday for the family
About 90 minutes by car from Tokyo, with the sea right in front of you, UMI is just the right distance for a family trip. Rooms where you can relax on tatami, and private baths just for your family. Take your time and enjoy a seaside holiday with your children.
Family Room
Relax on tatami
Our Japanese and Japanese-Western standard rooms sleep up to 4, and the 3F Premium Room with Open-air Bath, which includes a tatami room, sleeps 5. The whole family can stretch out together on the tatami.
Private Bath
Private baths for the family
There are five baths in the building that can be reserved for private use, so your family can bathe together without concern. "Yoshimi", with its Japanese atmosphere and large powder corner, is a good choice for families.
Seaside
About 30 seconds to the beach
The sea at Motona is right in front of you. Besides morning and evening walks along the water's edge, Mt. Nokogiri, the roadside stations and other family-friendly spots are all nearby.
Dining
Semi-private and private dining
Dinner and breakfast are served in a semi-private room with open views, or in a private room where you need not worry about your surroundings, so you can enjoy a relaxed meal even with children.
Staying with children
Children are welcome at UMI. When booking, please let us know the number and ages of the children. Yukata in children's sizes are available as loungewear. Children's rates and meals vary by plan, so please check the plan list or feel free to email us.
See all plans Enquiries by email ｜ [email protected]A day by the sea, on your own
About 90 minutes by car from Tokyo, UMI is just the right distance for a journey taken alone. A room that faces the sea and a private bath where no one disturbs you. Spend a day that follows no one's schedule but your own.
Ocean View
A window onto the sea
Every guest room faces the ocean. Spend your time with nothing but the view beyond the window and the sound of the waves, at no one's pace but your own.
Private Bath
A bath to yourself
Five of our baths can be reserved for private use. Even if you are not comfortable in a large shared bath, you can soak alone without anyone watching.
Seaside
About 30 seconds to the beach
Walk along the water's edge in the morning and watch the sea darken at dusk. A day with no plans may be the greatest luxury of all.
Quiet Dinner
A quiet dinner
Dinner is served in a semi-private room with open views, or in a private room, so you can take your time over a meal on your own.
Staying on your own
Depending on availability, the dates on which we can accept single-guest bookings may be limited. Once your travel dates are decided, please check the plan list or feel free to email us.
See all plans Enquiries by email ｜ [email protected]From guests who have stayed with us
Here are some of the comments we most often hear from guests who have stayed at UMI.
Private Bath
Misaki and Nagisa: private open-air baths that merge with the horizon
"Misaki", where the water's surface meets the horizon, and "Nagisa", where you can lie back in the bath. Many guests tell us that this time in a private bath, as if becoming one with the sea, was the highlight of their stay. At dusk you can watch the sea darken from the tub.
Seaside
The beach in front, the sea from every room
About 30 seconds' walk to the sand, and every room with an ocean view. Guests tell us that the view of the sea from the Terrace Lounge and Bar Lounge is what made them feel they had really arrived at a resort.
Cuisine
Fresh-caught seafood, at leisure in a private room
Seafood dishes led by local-fish sashimi, served in the semi-private and private rooms of Dining "UMI". Guests praise both the generous spread of dishes and the space to enjoy a meal without concern for those around them.
Hospitality
Smiling staff and thoughtful care for families
Kind, attentive staff and a building kept spotlessly clean. Private dining rooms and children's yukata are among the reasons many guests tell us they felt at ease staying with their children.
A night with the sea and the sky, booked on our official site.
Best Rate GuaranteeWe guarantee that the accommodation rates offered on this website are the best rates available, lower than on any other online booking site.
Enquiries by email
[email protected]
