TENSEI Onsen & Spa (22nd Floor at Cassia Rama 9 Hotel)

TENSEI Onsen & Spa Rama 9 is an authentic Japanese-style onsen with premium spa treatments, separate male and female zones, beautiful views from the 22nd floor of Cassia Rama 9. Easy to access and deeply relaxing in every way. Click to view packages!

Experience Authentic Onsen at TENSEI Onsen & Spa – Great Value in the Heart of Rama 9

TENSEI Onsen & Spa at Cassia Rama 9, or TENSEI Onsen & Spa, is located on the 22nd floor of Cassia Rama 9. This Japanese-style onsen and spa offers a calm sanctuary in the middle of Bangkok, combining true Japanese serenity with a modern, refined atmosphere.

The highlight is the natural mineral onsen with separate zones for men and women, complete with high-floor city views that help release tension, restore the body, and provide deep relaxation. There are also premium spa treatments inspired by Japanese and Zen healing principles, ideal for office workers and couples who want to escape into a truly peaceful environment.

If you’re wondering whether TENSEI Onsen & Spa is good, it is considered one of the best onsen experiences in Bangkok in terms of ambiance, service, and quality mineral water standards.

Highlights of TENSEI Onsen & Spa (Cassia Rama 9)

• Authentic Japanese mineral onsen – Detoxifies the body, relieves muscle pain, and promotes better sleep
• Premium spa treatments – Aroma massage, Thai massage, body scrubs, and relaxing treatments
• Skyline views from the 22nd floor – Relax while enjoying panoramic views of Bangkok
• True Japanese-inspired design – Calm, Zen-like ambiance that soothes you from the moment you arrive

Facilities at TENSEI Onsen & Spa

• Separate male and female onsen zones – With hot baths, cold baths, and hot stone areas
• Private lockers – Secure and convenient storage for your belongings
• Full amenities provided – Towels, robes, and slippers are all prepared for you
• Hair-drying and dressing areas – Perfect for getting ready before and after your session

How to Get to TENSEI Onsen & Spa (Rama 9)

• Address: 22nd Floor, Cassia Rama 9, Rama 9 Road, Bang Kapi, Huai Khwang, Bangkok 10310
• Nearest MRT Station: MRT Rama 9 (approximately 800 meters)
• Nearby Places: Central Rama 9 / Fortune Town / The Grand Rama 9
• Transportation: Private car, taxi, or MRT
• Parking: Parking available in the building

How to Book a Service at TENSEI Onsen & Spa at Cassia Rama 9

You can easily book online through the GoWabi platform:

1. Select the service or package you want
2. Complete your payment
3. Receive booking confirmation via email or the GoWabi app, including shop details and contact information for scheduling
4. For voucher purchases, calling in advance to schedule your visit is required
5. For bookings with pre-selected time slots, no phone call is necessary
6. Show your QR Code or booking number at the spa to use your service

Restrictions Before Booking at TENSEI Onsen & Spa at Cassia Rama 9

⚠️ Onsen Usage Restrictions

• If you have any underlying medical conditions or health concerns, please inform the operator in advance. The operator will not be responsible for any side effects that may occur.
• Not recommended for guests with open wounds or skin diseases: Please avoid using the onsen until the affected area has fully healed to prevent infection and the spread of skin conditions.
• Not recommended for pregnant women beyond 1 month, women on their menstrual period, and children under 12 years old.

⚠️ Massage Service Restrictions

• If you have any underlying medical conditions or health concerns, please inform the operator in advance. The operator will not be responsible for any side effects that may occur.
• Not recommended for guests with serious medical conditions such as heart disease, high blood pressure, diabetes, or vascular diseases. Please consult your doctor before receiving massage treatments, as massage may affect your health.
• Not recommended for guests with spinal problems or bone fractures: Massage may increase the risk of further injury, so please avoid or consult a doctor beforehand.
• Not recommended for guests with open wounds or skin diseases: Please wait until the area has fully healed to reduce the risk of infection and spread of skin conditions.
• Not recommended for pregnant women beyond 1 month, women on their menstrual period, and children under 12 years old.
• If you have sensitive or delicate skin, please check the ingredients of oils or scrubs used in treatments beforehand. It is recommended to ask the staff to help select suitable products to minimize irritation or allergic reactions.

Before Your Visit to TENSEI Onsen & Spa at Cassia Rama 9

Important information before receiving your service:

• Cannot be used in conjunction with other promotional campaigns
• Shop details, including location and contact information for making appointments, can be found in your booking details on the GoWabi app under “My Purchases” or in your confirmation email
• It is recommended to make an appointment at least 1 day before your preferred visit date
• Please arrive at least 15–20 minutes before your appointment time to prepare for your session
• If you arrive more than 15 minutes late, your treatment time may be shortened or your appointment may be canceled without refund
• No-shows without prior notice may be charged in full
• For rescheduling or cancellation, please inform the spa at least 24 hours in advance; otherwise, the spa reserves the right to charge the full amount
• Please present your QR Code or booking number from your email or GoWabi app before using the service
• For services requiring multiple visits, the first appointment must be scheduled before the coupon expiry date. Subsequent appointments must be arranged directly with the spa and are subject to availability.

Cancellation and Refund Policy

• You may request cancellation and receive a refund in the form of a Refund Code within 7 days from the purchase date. Cancellation policies may vary by service, so please check the details before booking.
• No refund is available if you fail to show up at the confirmed appointment time without prior notice.

Service Terms and Conditions

• Coupons must be used within the specified validity period, generally around 60 days or longer from the date of purchase. Validity may vary by service, so please check the service details before buying.
• Please book your appointment in advance. Contact information is provided in your GoWabi confirmation email or under “My Booking.”
• Coupons cannot be exchanged for cash or combined with other promotions.
• Please present your QR Code or booking number from your email or the GoWabi app before using the service.

Why Choose TENSEI Onsen & Spa Rama 9

Because TENSEI offers a truly authentic Japanese onsen and spa experience in the heart of Bangkok, recreating traditional relaxation with elevated service, beautiful views, and a high level of privacy that will impress you from your very first visit.

If you’re looking for a premium onsen and spa in the Rama 9 area, TENSEI Onsen & Spa pricing is fair, excellent value, and absolutely worth a try 🧖‍♀️🛁✨