Pool
Exterior
Guest room
Restaurant
Kids' Space
222 photos

Grand Mercure Minamiboso Resort & Spa

Chiba Prefecture／Minamiboso City

Elegant Resort Stay Amidst the Sea and Nature│All-Inclusive Hotel

A nature-rich Resort Hotel surrounded by the sea and forest, located within the Minamiboso Quasi-National Park. With a kids' space available, we support family trips as a "Welcome Baby" Property. Enjoy the pleasant breeze, the sound of waves, and the scent of the sea at Daifuzan Cape. Relax and unwind in our spacious public bath. ■ Lounge access included in all guest rooms. Enjoy sparkling wine, red wine, white wine, beer, coffee, juice, herbal water, and other soft drinks, along with snacks. ■ "All-Inclusive" for a carefree stay. Our Hotel offers an all-inclusive experience, with the Accommodation Fee covering dinner, breakfast, drinks at the buffet restaurant and lounge, Onsen, and activities. From the soothing scents upon arrival to the local cuisine, activities, and more, immerse yourself in the natural beauty, culture, and traditions of the area throughout your stay. * Some drinks and activities are available for an additional fee. Lunch is not provided. * In addition to the all-inclusive (dinner and breakfast included), we also offer breakfast-included and early booking Plans.

3.96(748)
  • Accommodation for three guests

    I usually stay here with my husband, but this time I stayed with three friends.I wanted to relax and unwind with friends I hadn’t seen in years. We enjoyed the Onsen, meals, and drinks, and we didn’t want the hassle of settling up every time, so we chose the all-inclusive plan.It was a great decision.My friends were thrilled too.Thank you very much.There’s a pier about a 5-minute drive from the Hotel with an amazing view—highly recommended.If you ask at the Hotel front desk, they’ll tell you how to get there.

    キュイソン 8/26/2026
  • Summer Memories

    Our family of four (a 9th grader and a 6th grader) had a wonderful stay. The all-inclusive plan was excellent, and the private cape, ocean views (the sunset was unforgettable), scenic walks, and the play areas inside the Hotel kept our kids very happy. The food, baths, and staff were all top-notch. Also, there’s an atmospheric spot called Haraoka Pier about a 5-minute drive away.

    anfieldroad9 8/16/2026

Facilities and Services

See All
  • Hot spring
  • Pet-friendly
  • Spa facility
Open-air bath / Large public bath / Sauna / Outdoor pool / Free shuttle service
IN15:00～24:00
OUT11:00
Number of rooms197 rooms
PetPermitted
Your childPermitted

Photo

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Introduction of the Accommodation

Exterior

In front lies a paradise of sea and greenery, a resort stay for families to enjoy.

An upscale hotel suitable for both business and leisure. Grand Mercure South Boso Resort & Spa is located at Cape Taibusa within the South Boso National Park. The rich nature of the sea and forest welcomes guests. Cape Taibusa has been used as a capital defense fortress since the arrival of the Black Ships, and as such, this area, despite its proximity to the metropolitan area, is blessed with untouched nature.

Breakfast

Indulge freely with all-inclusive offerings.

The all-inclusive package includes dinner, breakfast, drinks and snacks in the lounge, access to the large public bath, and various activities. Enjoy your stay to the fullest from check-in to check-out. *Please note that some drinks and activities are available for an additional fee. Lunch is not provided.

Herb Water

All property guests can use it for free. A lounge to enjoy by the hour.

We offer a lounge available for all guests staying at our Property. In the lounge, we provide complimentary beverages such as sparkling wine, red and white wine, beer, coffee, tea, herbal water, and other soft drinks, along with snacks. The offerings vary depending on the time of day, so we encourage you to visit at different times to enjoy a variety of options.

Drink
Raku / Evening Social

A space that offers tranquility, comfort, and relaxation as you step into the Hotel. From 15:00 to 18:00 in the lounge, you can enjoy sparkling wine, red wine, white wine, beer, or non-alcoholic beverages such as coffee, tea, and herbal water. Spend special moments while envisioning your stay.

Whisky
A little / Nightcap

Savor a sophisticated evening before bedtime, experiencing the local history and culture in a single bite. Bar time is from 21:00 to 23:00. Relax with your favorite drink and local delicacies, reminiscing about your travels or sharing conversations with cherished companions.

Amazake
Onsen Lounge

At the "Onsen Lounge," you can relax in a serene space softly illuminated after your bath. Between 6:00-10:00 and 15:00-23:00, refresh your throat with a revitalizing vinegar drink and unwind on the sofa. In the evening, enjoy amazake, a traditional Japanese sweet drink.

Room

Guest room

A relaxing space to enjoy the warm maritime climate of Minami Bōsō.

Spacious guest rooms of over 36 square meters and the beautiful sea view from the rooms offer a journey filled with seasonal changes, the scent of the wind, and encounters with discoveries and emotions yet to be experienced.

Restaurant

Restaurant

Enjoy the blessings of nature and the seasonal flavors of the Minami Bōsō region in a buffet style.

Enjoy exquisite dishes made with local ingredients from Minami Bōsō in a buffet restaurant featuring elegant interiors and a sophisticated ambiance. Savor regional delicacies and create special travel memories through taste. Relax and unwind in a comfortable and tranquil setting.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Restaurant
    Restaurant
  • Facilities & Services
    Facilities & Services

Notice from the Accommodation

  • Restaurant

    NEW! Introducing a plan that includes JPY 2,000 in dining credit per person.

    Not sure about your dining plans yet, but want to secure your Accommodation first?
    This is a No Meals Included Plan with a dining credit, recommended for guests who prefer flexibility.
    If you apply for the dinner & breakfast buffet set at the front desk on the day of your stay, guests aged elementary school and older can use a JPY 2,000 dining credit per person per night.
    Enjoy a free and flexible trip that suits your schedule and mood.

    [About the Dining Credit]
    - The dining credit can be used only when you apply for the dinner & breakfast buffet set.
    It cannot be used if you apply for breakfast only or dinner only.
    - The dining credit applies to each eligible guest individually (elementary school age and older). It cannot be transferred or combined within the same group.
    It is valid only during your stay; unused amounts are non-refundable, cannot be exchanged for cash, and cannot be applied to Accommodation charges.
    - No dining credit is provided for children under elementary school age.
    - Meal charges are not included in this Plan. Please pay separately on site for the dinner & breakfast buffet set.
    - Meal payments made on site are not eligible for points on any travel Reservation site.

    ■ Dinner & Breakfast Buffet
    In addition to our standard dinner & breakfast buffet menu available at all Hotels, each Hotel also offers regional specialties that vary by location.
    Discover a wide variety of dishes and new flavors to make your meals even more enjoyable.
    Dinner hours / Last entry: 20:00
    *For Reservations made after 20:00 on the day of stay, the dining credit cannot be used.

    [Dinner & Breakfast Buffet Set Price] (Example / per person)
    Adults: JPY 12,650 → JPY 10,650 after credit applied
    Elementary school students: JPY 11,220 → JPY 9,220 after credit applied
    Children under elementary school age: JPY 3,960 → Not eligible for credit (you may choose whether meals are included)

Basic Information

TaxesThe Hot Spring Tax for stays from January 5, 2025, onwards is included in the accommodation fee, so no payment for the Hot Spring Tax is required at the hotel.
Card information
VISA / MASTER / JCB / AMEX / DINERS
Pets
Permitted
※The following room types are "Pet-Friendly":※ Other room types do not allow pets to stay. ● Dog-Friendly Suite (Japanese-Western Style) with Ocean View ● Dog-Friendly Japanese-Style Room ● Dog-Friendly Western-Style Room Only dogs are allowed as pets. For more details, please refer to the Dog Agreement Form.
Breakfast■ Breakfast Buffet Enjoy local dishes perfect for the morning and over 60 carefully crafted menu items. Indulge in unlimited servings of our signature smoothies and champagne. Hours: 7:00 AM - 9:30 AM Price: ¥3,960 ■ Dinner Buffet Savor over 40 dishes, including specially selected local cuisine, for an elegant dining experience. Relish free-flowing beer, wine, and soft drinks to complement your meal. Hours: 5:30 PM - 9:00 PM Price: ¥8,690
Your child
You can stay.
Kids' play area available
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Towel · Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • × Shower cap
  • ○ Hair dryer
  • × Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Nightwear
  • × 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
  • × Video on Demand
  • × Radio
  • × CD player
  • × DVD player
  • × Blu-ray player
  • × Speakers for portable audio
  • × In-room PCs and tablets
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
7/18/2026~9/23/2026
Business Hours
09:00~17:00
Final admission time
---
Fee（Guest）
Free
Fee（Non-guest）
---
Children's pool
None
Age restriction
Pool shape
Irregular shape
Pool size


Water depth 40cm ～ 105cm
■Garden Pool / Included in the Accommodation fee [Operating Period] July 18, 2026 – September 23, 2026 The pool (9:00–17:00) is available before check-in and after check-out. Please use the complimentary baggage area (locker room) or the pool changing rooms for your luggage. * Rooms are available from 15:00. * Day-use is not available. * Operations may be suspended due to weather conditions.
Esthetic Massage
Available
Massage, etc.
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
06:00~23:00
Hot spring
None
Free-flowing
None
Milky hot spring water
None
Additional Information
Remarks
CLOSED 11:00 PM–6:00 AM / 10:00 AM–3:00 PM
Open-air bath
The number of Open-air bath
2
Business Hours
06:00~23:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
CLOSED 11:00 PM–6:00 AM / 10:00 AM–3:00 PM
Spring quality and benefits

Sodium-Chloride and Bicarbonate Hot Spring

SaunaAvailable
Hot stone spaNone
OthersThe following QR payment methods are available at the Hotel front desk: PayPay, auPAY, J-CoinPay, d Payment, Merpay, BankPay, AliPay+, WeChat Pay

Reviews

Overall Score
3.96
(748)
  • Rooms & Amenities
    3.77
  • Facility
    4.00
  • Hospitality & Service
    4.04
  • Meals
    3.94
  • Onsen & Bath
    4.13
  • Satisfaction
    3.88

*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 Prefecture1212 Tadara, Tomiura-cho, Minamiboso City
TEL：+81-3-5539-2634

◆ Nearest Station: Tomiura Station (Chiba Prefecture) (10 minutes by car or taxi)

◆ Nearest IC: Tomiura IC (8 minutes by car)

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
150 cars available outdoor
Valet service
Unavailable
For safety reasons, fireworks of any kind are strictly prohibited on the Hotel premises, regardless of whether they are brought in or their type. (As of 2024)

Pickup and drop-off information
Available (Free)For regular services, inquiries are required. Partial reservation system available.

Frequently Asked Questions

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