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- Hotel Diamant Niigata Nishi
About a 5-minute drive from the Niigata Nishi Interchange. Enjoy a comfortable stay with our large public bath and hot stone sauna.
The Hotel Diamont Niigata-Nishi, designed with the concept of "healing," features its standout attractions: the "large public bath" and "stone sauna." Enjoy a relaxing moment to rejuvenate for tomorrow. Pursuing a higher level of quality under the theme of "small luxury," we offer spacious guest rooms equipped with "duvet-style" beds that promise a comfortable night's sleep. Additionally, slim large-screen LCD TVs are installed to create a more open and relaxing space. With high-speed internet access and a full range of amenities, we ensure a comfortable and enjoyable stay. Twin rooms and Universal Twin rooms (barrier-free) are also available. Please choose according to your needs.
The building itself is old, but the Room has been renovated and is very clean. The cleaning was thorough, and the bathroom and toilet are separate, making it a good choice for those who dislike unit baths. Although it was a smoking Room with no non-smoking option, the guest Room did not smell of smoke as much as expected. However, the hallway had a strong smell of tobacco, which might be difficult for those sensitive to it. There is a large public bath, sauna, and stone sauna available, which would be especially appreciated during colder seasons. The parking lot is spacious enough, and there’s a convenience store and gas station nearby for added convenience. If I visit Niigata again, I would love to stay here. Thank you!
水菜が美味い 10/22/2025This was my first time staying here. The Hotel was very clean and had a fresh atmosphere. I chose this place because it allowed late-night bathing, the price was reasonable, and it accommodated three people. However, except for the staff at the bathhouse front desk, there were no smiles from the staff throughout my stay. It was very disappointing. Everything else was good, but I felt that better customer service would have made the experience even better.
nao。 9/12/2025
Facilities and Services
See All- Accessibility
| IN | 15:00~25:00 |
|---|---|
| OUT | 10:00 |
| Number of rooms | 126 rooms |
| Pet | Not allowed |
| Your child | Permitted |
Photo
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Introduction of the Accommodation

Public Bath
The bath in the large public bath of our Hotel uses "Tenju Stone." "Tenju Stone" is a mineral extracted from the geological layers of the "Wolaksan" region in Korea, known for its breathtaking natural beauty with valleys and lakes. It is rich in mineral content, has a high far-infrared radiation rate, and is also referred to as a "wave stone" due to its unparalleled wave frequency properties. Its excellent far-infrared properties make the water smoother, warm the body, promote sweating, and improve the bathwater's smoothness with its rich mineral content. Additionally, the large public bath features a mist sauna made of "Tenju Stone," which provides a negative ion effect. ■ Operating Hours 6:00 AM – 1:00 AM (Last entry at 12:00 AM) - Guests staying at the Property can use the facilities free of charge. - Separate rest areas for men and women are equipped with massage chairs, available for free use. - The women's area includes a powder room.

Hot stone bath
The stone sauna at our Hotel maintains a humidity level of approximately 25%, promoting a comfortable sweating effect. Stone sauna therapy is a health method that warms the body from the core through the hormesis effect of far-infrared rays, negative ions, and radon gas emitted from natural minerals. This process activates cells and enhances the natural healing power inherent in humans by inducing a significant amount of sweating. Known as an "Onsen without water," it involves lying on natural stones heated to about 50 degrees Celsius, with a towel placed underneath to achieve the sweating effect. It is said that the various natural energies from the stones provide benefits for health, weight loss, beauty, and relaxation. ■ Operating Hours 6:00 AM – 1:00 AM (Last admission at 12:00 AM) - Guests staying at the Property can use this facility free of charge. - Separate rest areas for men and women are equipped with massage chairs, available for free use. - The women's area includes a powder room.
Facilities and Equipment of Accommodation
- The room
- Restaurant
Basic Information
| Card information | VISA / MASTER / JCB / AMEX / DINERS |
|---|---|
| Pets | Not allowed |
| Breakfast | Breakfast Buffet Location: Restaurant “Diamont” Hours: [Weekdays] 7:00–9:00 / [Sundays & Holidays] 7:00–9:30 |
| Your child | You can stay. Child Sharing Existing Bedding is free for children of elementary school age and under.
If a bed is required, the same rate as an adult will apply. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | None |
| Fitness gym | None |
| Public Bath |
|
| Sauna | Available |
| Hot stone spa | AvailableHours: 6:00–24:00 Guests staying overnight may use this service free of charge once per night. |
| About Hygiene Measures | To help prevent the spread of COVID-19, our property is implementing the following measures:
- Alcohol-based disinfectant is available at the front counter and in on-site dining Facilities.
- Regular alcohol disinfection throughout the building.
- Disinfection after finalizing guestroom cleaning.
- Frequent washing of tableware in the restaurant. |
Reviews
- Rooms & Amenities4.48
- Facility4.59
- Hospitality & Service4.60
- Meals4.56
- Onsen & Bath4.67
- Satisfaction4.59
*Reviews that have been translated from Japanese.*
*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*
- 5.00チュウヒ80Date Posted: 7/2/2025
Access Information
Niigata Prefecture2517-2 Yamada, Nishi Ward, Niigata City, Niigata, Japan
TEL:+81-25-230-0055
■About 20 minutes by car from JR Niigata Station
■Hokuriku Expressway (from Tokyo/Osaka)
Niigata-Nishi IC → Niigata Bypass (National Route 7 toward Murakami) → about 5 minutes from Kurosaki IC
■Nihonkai-Tohoku Expressway / Ban-etsu Expressway (from Yamagata, Niigata Airport, Fukushima)
Niigata-Chuo IC → Prefectural Route 16 → “Niigata Bypass” Meike IC (National Route 8 toward Nagaoka) → about 5 minutes from Kurosaki IC
■About 35 minutes by taxi from Niigata Airport
■About 20 minutes by taxi from JR Niigata Station
- Parking Information
- Fee
- Free for guests
- Parking time
- 24 hours
- Parking space
- No restrictions
- Number of parking spaces
- 140 cars available Indoor & Outdoor
- Valet service
- Unavailable
- Pickup and drop-off information
- Unavailable
Frequently Asked Questions
Please provide information about Public Bath.
・Business Hours: 06:00~24:00 ・Hot spring: None ・Free-flowing: None ・Cloudy hot spring water: None Guests staying with us may use these facilities free of charge. The separate men’s and women’s relaxation lounges are equipped with massage chairs. The women-only area includes a powder room. Guests with tattoos are not permitted to use the bathing facilities. A mist sauna is available in the large public bath area.
Is breakfast available?
Breakfast Buffet Location: Restaurant “Diamont” Hours: [Weekdays] 7:00–9:00 / [Sundays & Holidays] 7:00–9:30
What are the check-in and check-out times?
Check-in 15:00~25:00 Check-out 10:00
What kind of facilities and features are available?
There are the following facilities and features. Large public bath・Sauna・Ganbanyoku (rock bathing)・Within a 5-minute walk to the convenience store.・Barrier-free
I would like to know the access information.
■About 20 minutes by car from JR Niigata Station ■Hokuriku Expressway (from Tokyo/Osaka) Niigata-Nishi IC → Niigata Bypass (National Route 7 toward Murakami) → about 5 minutes from Kurosaki IC ■Nihonkai-Tohoku Expressway / Ban-etsu Expressway (from Yamagata, Niigata Airport, Fukushima) Niigata-Chuo IC → Prefectural Route 16 → “Niigata Bypass” Meike IC (National Route 8 toward Nagaoka) → about 5 minutes from Kurosaki IC ■About 35 minutes by taxi from Niigata Airport ■About 20 minutes by taxi from JR Niigata Station
Is parking available?
・Fee: Free for guests ・Parking Hours: 24 hours ・Parking space: Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces: 140 cars ・Valet Service: Unavailable Buses, trucks, and similar vehicles require a Reservation (some may incur an additional fee).
Is an internet connection available?
Connection is possible. ・Wi-Fi is available. ・Wired connection is available. For more details, please refer to the room and plan information.
Is there a sauna?
Yes, there is.
Do you have a rock bath?
Yes, there is. Hours: 6:00–24:00 Guests staying overnight may use this service free of charge once per night.
What kind of hygiene management is being conducted?
To help prevent the spread of COVID-19, our property is implementing the following measures: - Alcohol-based disinfectant is available at the front counter and in on-site dining Facilities. - Regular alcohol disinfection throughout the building. - Disinfection after finalizing guestroom cleaning. - Frequent washing of tableware in the restaurant.
What amenities are available?
We offer the following amenities. Shampoo · conditioner・Body soap · soap・Towel · Bath towel・Body towel · sponge・Toothbrush set・Comb · Brush・Hair dryer・Shaving・Shaving Gel/Foam・Yukata・Nightwear・Slippers・Cotton swab・Cotton・Refrigerator・Electric kettle・Tea set (free)・Television・Satellite broadcasting
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