A Resort Hotel featuring Boso and Kamogawa’s abundant local ingredients and breathtaking Pacific Ocean views

A Resort Hotel facing Kamogawa Matsubara Beach with a panoramic view of the Pacific Ocean. Enjoy the open-air "Bathhouse" with walking corridors, three private baths, and the flavors of Boso and Kamogawa blessed with ingredients from the sea and land.

  • They were very accommodating, including an early check-in and arranging our luggage for the return trip. The Hotel had a calm, long-established tropical atmosphere, and the ocean view with palm trees felt like Hawaii—surprisingly exotic and very relaxing. We couldn’t swim in the sea due to high waves, but we still enjoyed the pool.In the open-air bath, there were spider webs on the ceiling.For dining in the lounge, I think it would be nice to have meal options—especially a curry dish.

    Miica 8/8/2026
  • The staff were very considerate in many ways, such as during meals with our children, and we had a very comfortable stay. Looking around, there were many guests with small children, and the buffet offered a great selection of kids’ meals—my wife was pleasantly surprised. From check-in onward, the kind service and polite communication made our stay enjoyable. There were also many international staff members in the restaurant, and we are grateful for everyone’s friendly service.

    kanmo 2/3/2026

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
  • Spa facility
Open-air bath / Large public bath / Private bath / Sauna / Ganbanyoku (rock bathing) / Within a 5-minute walk to the convenience store. / Outdoor pool / Free shuttle service
IN15:00~24:00
OUT10:00
Number of rooms120 rooms
PetNot allowed
Your childPermitted

[Room Only Stay] Great Value! Slightly Limited Plan

IN 15:00~22:00
OUT 10:00
¥18,600
No meals ; 2 peopleTax included¥14,880
(USD 93.26)

<Casual Onsen Trip> Plan with one-night stay and breakfast included

IN 15:00~22:00
OUT 10:00
¥23,000
Breakfast included ; 2 peopleTax included¥18,400
(USD 115.33)
Maisonette Room
  • Fourth
  • 87㎡
  • Capacity 2~6 people

Maisonette Plan: Spacious 87 m² Guest Room with Mezzanine (No Meals Included)

IN 15:00~22:00
OUT 10:00
¥20,400
No meals ; 2 peopleTax included¥16,320
(USD 102.29)

<Casual Onsen Trip> Plan with one-night stay and breakfast included

IN 15:00~22:00
OUT 10:00
¥24,800
Breakfast included ; 2 peopleTax included¥19,840
(USD 124.35)

<Casual Onsen Trip> Plan with one-night stay and breakfast included

IN 15:00~22:00
OUT 10:00
¥24,800
Breakfast included ; 2 peopleTax included¥19,840
(USD 124.35)

[Free Pool Access] Summer Plan – Easy Stay! Breakfast Included!

IN 15:00~22:00
OUT 10:00
¥25,600
Breakfast included ; 2 peopleTax included¥20,480
(USD 128.36)

Best-Selling Stays

Accommodation Suitable For Families With Elementary School Girls

Easy-To-Reach Accommodation Without A Car

Accommodation With Easy Access To Public Transportation

Accommodation Suitable For 2 Family Trips

Accommodation Convenient for Exploring Natural Attractions

Introduction of the Accommodation

Onsen and bath

Explore the 'hot springs' as if strolling through a corridor.

The open-air "bathhouse" offers the charm of outdoor bathing and welcomes guests with the Pacific Ocean.

Restaurant dinner buffet
Restaurant dinner buffet
Restaurant dinner buffet
Restaurant dinner buffet
Meal

You can choose between a Japanese-Western buffet style at the restaurant or a Japanese course meal at the private dining MIRAI, featuring the sea and rural delicacies unique to Minamiboso and Kamogawa.

Room
Room

Enjoy a serene time while feeling the comfort of floating on the sea.

Fireplace
Other Facilities

Enjoy a leisurely stroll while feeling the sea breeze.

Facilities and Equipment of Accommodation

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

Notice from the Accommodation

  • Example of a Premium Japanese-Western Room with an Open-Air Bath

    Notice of Partial Guest Room Renovation and Reopening

    The interior renovation of select guest rooms, which began on June 10, 2026, has now been completed, and as of today (July 17), the renewed rooms are available for stays.

    In this renewal, the rooms have been redesigned in a modern Japanese style that combines the comfort of tatami with the ease of beds.
    The tatami area is furnished with chairs and a sofa, creating a spacious setting where families, couples, and friends can relax together.
    Enjoy a soothing stay in a calm design accented by the warmth of wood.

    Introducing Our Newly Renovated Rooms

    ■ Premium Modern Japanese-Style Room B with Open-Air Bath
    Relax on tatami. Unwind in bed.
    A newly renovated open-air bath room inspired by modern Japanese design. The tatami area features chairs and a sofa, finished in a serene atmosphere with the warmth of wood. From the private open-air bath, take in sweeping ocean views as you enjoy an unhurried moment.
    41 m² / Up to 4 guests / 3 beds + 1 daybed / Private open-air bath

    ■ Premium Japanese-Western Room with Open-Air Bath
    The best of Japanese and Western comfort—together in one room.
    A Japanese-Western style room with an open-air bath featuring both tatami space and bed space. With a relaxing sofa and chairs as well, couples and families can spend time just as they like. From the private open-air bath, take in sweeping ocean views as you enjoy an unhurried moment.
    41 m² / Up to 3 guests / 2 beds + 1 daybed / Private open-air bath

    We look forward to welcoming you.

    *Images shown are renderings for illustrative purposes only; actual rooms may differ.*

  • Children’s Samue Size Guide

    Children’s in-house loungewear will be changed to samue (traditional Japanese workwear).

    At Kamogawa Grand Hotel, starting Friday, July 17, 2026, children’s in-house wear will be changed from yukata to samue, which is easier to move in and less likely to come undone.
    Children’s samue are available in front of the Front Desk on the 1st floor—please choose your preferred size and design.

    ・Children’s Samue
    Start date: From Friday, July 17, 2026
    Sizes: S / M / L (3 sizes)
    Designs: 3 types (2 plain styles / 1 fish pattern)

    [Size Guide]
    S: Height approx. 90–110 cm
    M: Height approx. 110–130 cm
    L: Height approx. 130–150 cm

    To help even our youngest guests stay comfortable, we have prepared samue that are easy to change into and easy to move around in. Please feel free to use them.

  • 25m outdoor pool opening in summer

    The pool is open until September 23!

    The outdoor pool for summer 2026 will be open until September 23.

    The children’s pool is a triangular pool with a maximum depth of 70 cm, and the adult pool is a 25 m swimming pool with a maximum depth of 170 cm.
    Guests can use the pools free of charge.
    Please visit Kamogawa Grand Hotel during your summer vacation.

    Summer 2026 Pool Opening Period
    Opening period
    July 4 (Sat) – September 23 (Wed, public holiday)

    Swimming hours
    9:00–17:00

    - Pool lifeguards are scheduled to be on duty from late July to late August.
    - Please be sure to check the pool rules posted inside the Hotel before use.
    - On check-in day, swimming is available from 11:00 to 17:00.
    - On check-out day, swimming is available from 9:00 to 14:00.
    - Large inflatable floats are not permitted.

Basic Information

TaxesA Hot Spring Tax of JPY 150 will be collected separately (applicable to guests aged 12 and over).
Card information
VISA / MASTER / JCB / AMEX / DINERS / UnionPay
Pets
Not allowed
BreakfastThere is no information about breakfast.
Your child
You can stay.
■Children’s Rates Elementary school children (meals and bedding included): 70% of the adult rate Infants/toddlers (meals and bedding included): 50% of the adult rate Infants/toddlers (meals included, no bedding): 50% of the adult rate Infants/toddlers (no meals, bedding included): 50% of the adult rate Infants/toddlers (no meals and no bedding / Child Sharing Existing Bedding): JPY 3,300 *Please include all guests, including children sharing existing bedding, when entering the number of guests for your Reservation.*
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Face towel
  • ○ Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • × Shower cap
  • ○ Hair dryer
  • ○ Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Pajamas
  • × 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
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
Outdoor pool
Available period
7/4/2026~9/23/2026
Business Hours
09:00~17:00
Final admission time
---
Fee(Guest)
Free
Fee(Non-guest)
---
Children's pool
Available
Age restriction
Pool shape
Rectangular
Pool size
Length 25m

Water depth 170cm
Open for the summer season only
Esthetic Massage
Available
We recommend making a Reservation in advance.
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
11:00~01:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
■Hours of Use 11:00 AM–1:00 AM / 5:00 AM–9:30 AM *Discounted rates are available for day-use bathing after check-out.*
Open-air bath
The number of Open-air bath
2
Business Hours
11:00~01:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
■Hours of Use 11:00 AM–1:00 AM / 5:00 AM–9:30 AM *Discounted rates are available for day-use bathing after check-out.*
Private bath
The number of Private bath
3
Business Hours
11:00~21:30
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Seaside open-air baths “Amanoyu” and “Uminoyu” • 45 minutes: 4,620 yen Pine grove-side open-air bath “Bengara-no-Yu” • 45 minutes: 4,070 yen *Guests staying at the Accommodation receive a 1,100 yen discount.*
Room with Open-Air Bath
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
On the 5th–7th floor Premium Floors, 32 rooms feature private open-air Onsen baths (the in-room open-air baths use Komeiseki Onsen).
Spring quality and benefits

Sulfur–Sodium–Chloride–Bicarbonate Cold Mineral Spring (Hypotonic, Mildly Alkaline, Cold Mineral Spring)

Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, etc.

SaunaAvailable
Hot stone spaAvailableHot Spring Bath “Ganban Barley Rice Bath”
Others[Credit Cards] VISA, MasterCard, UnionPay, JCB, American Express, Diners Club, DISCOVER [Electronic Money] iD, Rakuten Edy, WAON, nanaco, QUICPay [Transportation IC Cards] Suica, PASMO, Kitaca, TOICA, manaca, ICOCA, SUGOCA,nimoca ,Hayakaken [QR Code Payments] Apple Pay、Google Pay、PayPay、AEON Pay etc.

Reviews

Overall Score
4.08
(140)
  • Rooms & Amenities
    4.06
  • Facility
    3.86
  • Hospitality & Service
    4.08
  • Meals
    4.16
  • Onsen & Bath
    4.31
  • Satisfaction
    4.01

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Chiba Prefecture820 Hiroba, Kamogawa City
TEL:+81-4-7092-2111

◆Nearest IC: Kimitsu IC on the Tateyama Expressway (50 min by car)

◆Nearest station: 10 min walk from Awa-Kamogawa Station (JR Sotobo Line)
About 5 min by Shuttle Service bus from Awa-Kamogawa Station (advance phone Reservation required)
*The Shuttle Service bus from Awa-Kamogawa Station operates by Reservation only. Please call in advance. (Service hours: 9:00–18:00 / TEL +81-4-7092-2111)

◆Nearest highway bus stop: 1 min walk to the Hotel from “Kamogawa Grand Hotel-mae” bus stop on the highway buses “Tokyo–Kamogawa Line (Axi)” and “Chiba–Kamogawa Line (Capina)”

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
100 cars available outdoor
Valet service
Unavailable
Parking is available on a first-come, first-served basis; no Reservation required.
Two chargers for electric vehicles and plug-in hybrid vehicles are available in the parking lot (standard charging / charging fees apply).

Pickup and drop-off information
Available (Free)*The Shuttle Service bus from Awa-Kamogawa Station is available by Reservation only. Please call in advance. (Operating hours: 9:00–18:00 / TEL: 04-7092-2111)

Frequently Asked Questions

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