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海の庭 Umi no Niwa

casual Ryokan/Inn
Umi no Niwa / chiba Katsuura・Kamogawa 65


Umi no Niwa is located right by Minami Boso, nature's treasure chest. 
The convenient location that gives you the best view as well as nearby sightseeing is a huge appeal. 

For rooms, we have Japanese style rooms that are unique to ryokan. 
You can select a room type that best fits your travel itinerary. 

We have 3 hot spring spas, each with its own vibe. 
The private outdoor spa "Umi no Toki" is available to reserve for free. 
The evening view you will see from this private atmosphere is sure to be memorable. 
You can fully enjoy yourself without a care in the world. 

Various dishes that use Kominato's fresh shellfish, and a sushi boat filled to 
the brim with the ocean's gifts are only some of the items you will enjoy in our seasonally changing dinners. 

Each traveler has their own style. 
We hope to answer to all.       
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Room types


Relux grade


Accommodations that have achieved high customer satisfaction and that can be enjoyed casually.

Overall Rating(17 reviews)


















Other Facilities4.1/5

Mr./Ms. Y.S(42)

Total points

Stayed in

Room type


57.6m² Room (Ocean Side)


Hospitality and cooking were the finest in a ryokan I have ever visited. Thank you very much.

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Mr./Ms. K.O(34)

Total points

Stayed in

Room type


Special Room Umi no Niwa

口コミ通り、お料理のボリュームが多いだけでなく、どれもとても美味しかったです。角部屋にしましたが、お部屋からは港がみえ開放感があり、また調度品も十分でした。 妊娠中ということでお食事どころでは膝掛けをご用意いただいたり、お料理の変更も快く... Read more 口コミ通り、お料理のボリュームが多いだけでなく、どれもとても美味しかったです。角部屋にしましたが、お部屋からは港がみえ開放感があり、また調度品も十分でした。 妊娠中ということでお食事どころでは膝掛けをご用意いただいたり、お料理の変更も快く対応頂き、また、主人の誕生日でもあったのでお部屋にはお花を用意頂いておりました。細かな心遣い、接客応対にとても満足でき、気持ちの良い旅行となりました。どうもありがとうございました。

As the word of mouth, not only there are many dishes, but all were very delicious. We made corner room, but there was port feeling from the room and there was a feeling of opening and furniture was enough, too. I was preparing for a knee-rest at the meal site during pregnancy, and I was also happy to respond to changes in cooking, and also had a flower prepared in my room as it was also my husband's birthday. It was a pleasant trip that I was very satisfied with with meticulous care and customer service. Thank you very much.

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Mr./Ms. N.M(37)

Total points

Stayed in

Room type


Ryouka 100.8m²

色々なお気づかいありがとうございました。 夜はお料理ボリューム満点で、嬉しかったです!!

Thank you for your attention. I was happy at night with a great deal of food! !

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Umi no Niwa


169 Kominato, Kamogawa-shi, Chiba-ken  [View map]

check-in / check-out time

15:00 / 10:00

CI/CO time may be different depending on plan.

Credit card


Number of guest rooms

8 room(s)


Dining Area【Kura】

Enjoy dinner watching ships dock and leave the harbor. This spacious restaurant can seat up to 40 guests. 
Dinner and breakfast will be served at this 2F location. 
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【Umi no Tsuki】
There is a fish tank next to the bath.
Watch fish and crabs slowly swim about as you relax.
This bath is like an aquarium. The types of fish and crab in the fish tank depends on the season. 

【Umi no Hana】
The washing area is lined with tatami for minimal slipping. This is very safe for children. 


【Umi no Toki】
Look out to the sunset from the top most floor. Experience the ultimate relaxation. You can book a free 50 minute session. 

We take reservations starting from 8am the day of your stay
over the phone.
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Other facility information

Please contact the hotels/ryokans directly for more details.
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Kominato machi
 ・Kominata Tanjo-ji・Tai no Ura … 2min walk
 ・Moriya Beach(one of the clearest waters in Kanto Region)… 10 min by car
 ・Katsura Kaichu Park /Umi no Museum … 15 min by car
 ・Katsura Morning Market … 20 min by car
 ・Seicho-ji・Yomogi Fudono Falls … 15min by car
 ・Kamogawa Seaworld … 15min by car
 ・Uomizuka Observatory … 25 min by car
 ・Futomi Flower Center … 30 min by car
 ・Nomizo Waterfall … 30 min by car
 ・Mother Farm … 45 min by car
 ・Yoro Keikoku … 30 min by car
 ・Nojimazaki Lighthouse … 30 min by car
 ・Mount Nokogiri … 60 min by car
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・Please let us know your mode of arrival
・Please inform us if you plan to arrive past 5pm
・Please inform us of the age and gender of children if applicable(Only in rooms available for children)
・Please give us contact information we can reach you at the day of your arrival
・Please inform us of specific food preferences
*For children under 1yo there will be no fee, but please inform us of number and gender

・Bathing fee (150 yen) is not included
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  • Bath tax
  • Children allowed
  • Room service
  • Transportation service
  • Parking area
  • Hot spring
  • Fresh hot spring
  • Room with outdoor spa
  • Public spa
  • Private spa
  • Indoor pool
  • Outdoor pool
  • Esthe/Spa facility
  • Fitness facility
  • Barrier free
  • 5 min walk from station
  • Pets allowed
  • Breakfast in room
  • Dinner in room
  • Open air bath
  • Night view
  • Ocean view
  • Cottage
  • Coupon

The accommodation features are general descriptions of the facility. The amenities and breadth of service will differ between each accommodation. For details, please confirm directly with the accommodation.


Access by public transportation.

【From Tokyら】
Tokyo Station (Keiyo Underground Platform) → JR Sotobo line(Boso Express Train Wakashio → Awa-Kominato Statio 1.5h 

After 2:30pm, we will send pick up to Awa-Kominato station if you call us upon your arrival. 

169 Kominato, Kamogawa-shi, Chiba-ken

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