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施設画像
施設画像
施設画像
施設画像
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Grampus Sea

Wakayama Prefecture／Nanki Shirahama Onsen
¥13,500～
Breakfast included ; 2 peopleTax included¥12,150〜
(USD 76.24)

Three types of open-air baths, cuisine, excellent tourist access, and BBQ enjoyment available

A property featuring three types of open-air baths and delightful cuisine, located just a 3-minute walk from Sanjōjiki. A bus stop is conveniently situated right in front of the hotel, making it ideal for sightseeing and leisure. The space, crafted with Hinoki wooden and stone baths, exudes charm and provides relaxation. The Japanese-style rooms are equipped with beds, offering a blend of Japanese and Western atmospheres for your stay.

3.93(15)
  • Deluxe Twin is highly recommended for your stay.

    I stayed in a Deluxe Twin room at the end of the year. The room was spacious with two single sofas and had a toilet but no bath. The bus stop is right in front, and you can walk to Senjojiki while enjoying a stroll, avoiding the usual parking lot wait. Dinner included an all-you-can-drink option with plenty of dishes, which was very satisfying. I didn’t notice any insects or mites mentioned in other reviews.

    Yahoo!トラベルユー... 1/4/2026
  • The highway bus stop and Senjojiki are nearby.

    The room does not have private water facilities, but the room and building are clean. The Onsen does not seem to be natural, but it was relaxing as it was in a private setting. Breakfast is served with pre-arranged side dishes to pick up. For dinner, it would be nice to have a nearby seafood restaurant, but I had Wakayama ramen next door.

    Yahoo!トラベルユー... 10/13/2025

Facilities and Services

See All
  • Hot spring
Open-air bath / Large public bath
IN15:00～22:00
OUT10:00
Number of rooms74 rooms
PetNot allowed
Your childPermitted

Photo

See All
[Western-style Room] Economy Twin
  • Twin
  • 12.7㎡
  • Capacity 1~2 people

【Early Bird 30】Book 30 days in advance for 10% OFF - Enjoy Onsen ＜Breakfast Included Plan＞

IN 15:00～22:00
OUT 10:00
¥13,500～
Breakfast included ; 2 peopleTax included¥12,150〜
(USD 76.24)

After sightseeing in Shirahama, enjoy the natural Onsen.

IN 15:00～22:00
OUT 10:00
¥15,000～
Breakfast included ; 2 peopleTax included¥13,500〜
(USD 84.71)
Japanese-style room with 6 tatami mats (with toilet)
  • Japanese-style Room
  • Capacity 1~3 people

After sightseeing in Shirahama, enjoy the natural Onsen.

IN 15:00～22:00
OUT 10:00
¥16,000～
Breakfast included ; 2 peopleTax included¥14,400〜
(USD 90.36)

[Fluffy Premium Unagi Bowl Plan] Relaxing STAY with Onsen

IN 15:00～18:30
OUT 10:00
¥24,000～
Dinner and Breakfast included ; 2 peopleTax included¥21,600〜
(USD 135.54)
Corner Twin ※ Triple accommodation available

After sightseeing in Shirahama, enjoy the natural Onsen.

IN 15:00～22:00
OUT 10:00
¥17,000～
Breakfast included ; 2 peopleTax included¥15,300〜
(USD 96.00)

[Fluffy Premium Unagi Bowl Plan] Relaxing STAY with Onsen

IN 15:00～18:30
OUT 10:00
¥25,000～
Dinner and Breakfast included ; 2 peopleTax included¥22,500〜
(USD 141.18)

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Relaxing Japanese-Style Accommodation

Introduction of the Accommodation

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Relax in the spacious and elegant open-air bath.

There are three proud open-air Onsen baths for both men and women, offering a spacious and elegant atmosphere where you can relax while being embraced by the sea breeze. The spaces created with Hinoki wooden baths and rock baths exude charm and soothe the soul. The Onsen, with its leisurely flowing time, will relieve the fatigue of your journey. Please enjoy to your heart's content.

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Just a 3-minute walk from Grampus SEA, you can enjoy a BBQ at Grampus Inn.

At Shirahama BBQ Garden, you can enjoy breathtaking views from the hilltop. Forget the hustle and bustle of the city and leisurely enjoy BBQ with your family and loved ones. There are two Plans available: bring your own ingredients or purchase carefully selected ingredients from the BBQ Garden.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Restaurant
    Restaurant

Basic Information

Card information
VISA / MASTER / JCB / AMEX
Pets
Not allowed
Breakfast【Breakfast】Restaurant (Fisherman's Breakfast)
Your child
You can stay.
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
Esthetic Massage
None
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
15:00~23:00
Hot spring
None
Free-flowing
None
Milky hot spring water
None
Additional Information
Remarks
Bathing hours: 15:00～23:00 / 7:00～10:00
Open-air bath
The number of Open-air bath
6
Business Hours
---
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Bathing hours: 3:00 PM to 11:00 PM.
Spring quality and benefits

Sodium chloride bicarbonate spring / Sodium chloride bicarbonate spring.

Injury / Neuralgia / Fatigue Recovery

SaunaNone
Hot stone spaNone
Others【Other available cards】 DC

Reviews

Overall Score
3.93
(15)
  • Rooms & Amenities
    3.93
  • Facility
    3.67
  • Hospitality & Service
    4.07
  • Meals
    3.64
  • Onsen & Bath
    4.20
  • Satisfaction
    4.07

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Wakayama Prefecture1688-2, Shirahama-cho, Nishimuro-gun
TEL：+81-739-82-3578

Approximately 20 minutes by car from Shirahama Station, 3 hours by express bus from JR Namba, 1 minute walk from Senjojiki stop.

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
---
Valet service
Unavailable

Pickup and drop-off information
Unavailable

Frequently Asked Questions

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