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- Condominium Hotel with Panoramic Hot Springs - Grandview Iwai
Condominium Hotel with Panoramic Hot Springs - Grandview Iwai
Chiba Prefecture/MinamibosoBreathtaking views from 40 meters above, resort living with a fully equipped kitchen.
A condominium Hotel with a scenic Onsen located 40 meters above ground. All Rooms are equipped with kitchens, cooking utensils, and tableware, allowing guests to bring their own ingredients. From the scenic bath on the top floor, you can enjoy a panoramic view of the majestic Boso sea, refreshing both body and mind. Additionally, we offer Rooms with sea views, including Japanese-style and Western-style rooms. Dinner delivery services, such as boat platter meals or orders from nearby restaurants, are also available.
We stayed for one night. The boat-style sashimi platter served in our Room and the breakfast served at the dining venue were excellent in quantity, quality, and taste. The property is close to the sea and also has a large public bath with a great view, so we were able to relax and take it easy. Check-in was a bit confusing at times, but the staff helped us. We would like to stay again.
Yahoo!トラベルユー... 3/24/2026I have stayed here many times before, but this time I stayed for two nights with No Meals Included to take astrophotography. The sea-facing side is oriented west, and by setting up a smart telescope on the balcony, you can capture celestial objects from south to north-northwest. While photographing the Milky Way, frequent passing airplanes left trails that were somewhat distracting, but I managed to capture an incredible shot and was very satisfied. Choosing No Meals Included allowed me the freedom to focus on my schedule without being tied down by meal times. I will definitely stay here again for the same purpose.
Yahoo!トラベルユー... 9/27/2025
Facilities and Services
See All- Hot spring
| IN | 15:00~21:00 |
|---|---|
| OUT | 10:00 |
| Number of rooms | 57 rooms |
| Pet | Not allowed |
| Your child | Permitted |
Photo
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Introduction of the Accommodation

Observation bath
From the observation bath "Sora no Yu" on the top floor (12th floor), at a height of 40m above ground, you can enjoy the magnificent view of the Boso sea.
Facilities and Equipment of Accommodation
- The room
- Restaurant
Basic Information
| Card information | VISA / MASTER / JCB / AMEX / DINERS / UnionPay |
|---|---|
| Pets | Not allowed |
| Breakfast | There is no information about breakfast. |
| Your child | You can stay. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | None |
| Fitness gym | None |
| Public Bath |
|
| Spring quality and benefits | Simple Onsen (Simple Spring) Improves circulation, promotes beautiful skin, and helps relieve fatigue. |
| Sauna | None |
| Hot stone spa | None |
| Others | Payment is due in a single lump sum. |
| About Hygiene Measures | 1: Restrictions on use of in-house facilities
Day-use bathing, the sauna room at the panoramic Onsen, and the kids’ room are currently unavailable.
* The panoramic Onsen is available with limited capacity.
* The laundry facilities are available.
2: Changes to breakfast buffet service
Hours: 6:30–9:00
* Last entry: 8:45
* Seating is limited, so please make your Reservation for a Plan as early as possible.
Please sanitize your hands with alcohol upon entering the restaurant.
Some dishes are served individually in small bowls.
We appreciate your cooperation with proper cough etiquette during meals.
3: Thorough health and hygiene management for staff
Staff mask-wearing (optional), disinfection upon entering the building, thorough handwashing, and daily temperature checks for staff reporting to work
4: Hygiene management in guest rooms and common areas
To prevent infection, we clean and disinfect frequently touched surfaces such as elevator buttons and in-room switches using disinfectant solutions.
We sincerely apologize for any inconvenience this may cause and appreciate your understanding and cooperation. |
Reviews
- Rooms & Amenities4.48
- Facility4.16
- Hospitality & Service4.39
- Meals4.59
- Onsen & Bath4.39
- Satisfaction4.48
*Reviews that have been translated from Japanese.*
*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*
Access Information
Chiba Prefecture527-16 Hisae, Minamiboso City
TEL:+81-470-57-3311
7 minutes on foot from Iwai Station on the JR Uchibo Line
After exiting the Tateyama Expressway at Kyonan-Tomiyama IC, turn right at the third traffic light and go straight through the Ichibu intersection for 200 m.
- Parking Information
- Fee
- Free for guests
- Parking time
- ---
- Parking space
- No restrictions
- Number of parking spaces
- 60 cars available outdoor
- Valet service
- Unavailable
*From the second vehicle onward: ¥1,500 fee applies*
- Pickup and drop-off information
- Unavailable
Frequently Asked Questions
What kind of facilities and features are available?
There are the following facilities and features. Hot spring・Large public bath・Within a 5-minute walk to the convenience store.
I would like to know the access information.
7 minutes on foot from Iwai Station on the JR Uchibo Line After exiting the Tateyama Expressway at Kyonan-Tomiyama IC, turn right at the third traffic light and go straight through the Ichibu intersection for 200 m.
Is parking available?
・Fee: Free for guests ・Parking space: Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces: 60 cars ・Valet Service: Unavailable Passenger car parking (contracted parking lot) *From the second vehicle onward: ¥1,500 fee applies*
Is an internet connection available?
Connection is possible. ・Wi-Fi is available. For more details, please refer to the room and plan information.
What kind of hygiene management is being conducted?
1: Restrictions on use of in-house facilities Day-use bathing, the sauna room at the panoramic Onsen, and the kids’ room are currently unavailable. * The panoramic Onsen is available with limited capacity. * The laundry facilities are available. 2: Changes to breakfast buffet service Hours: 6:30–9:00 * Last entry: 8:45 * Seating is limited, so please make your Reservation for a Plan as early as possible. Please sanitize your hands with alcohol upon entering the restaurant. Some dishes are served individually in small bowls. We appreciate your cooperation with proper cough etiquette during meals. 3: Thorough health and hygiene management for staff Staff mask-wearing (optional), disinfection upon entering the building, thorough handwashing, and daily temperature checks for staff reporting to work 4: Hygiene management in guest rooms and common areas To prevent infection, we clean and disinfect frequently touched surfaces such as elevator buttons and in-room switches using disinfectant solutions. We sincerely apologize for any inconvenience this may cause and appreciate your understanding and cooperation.













