Tensei Onsen & Spa Rama 9

True relaxation begins before you step into the Onsen.

In Japanese wellness culture, cleansing is more than a routine—it’s a ritual that allows both your body and mind to slow down.

Take a warm shower, wash away the stress of the day, then immerse yourself in the soothing warmth of our Onsen.

Every step is designed to help you reconnect with yourself.

At Tensei Onsen & Spa, every visit is your moment to pause, recharge, and embrace genuine relaxation in the heart of Bangkok.

✨ Because self-care isn’t a luxury—it’s part of living well.

📍 Tensei Onsen & Spa at Cassia Rama 9

📩 Check our page for the latest offers and book your wellness experience today.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:



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🎁 Mother’s Day Special

✨ Mom receives 50% OFF
on any 90-minute massage
when accompanied by one guest paying the regular price.

🎉 Celebrate Mother’s Day with a gift she’ll truly cherish.

Sometimes, the most meaningful present isn’t something you buy—it’s the time you spend together.

Invite your mom to enjoy a premium wellness journey at Tensei Onsen & Spa, located on the 22nd floor of Cassia Rama 9 Bangkok Hotel, where comfort, tranquility, and attentive care come together.

✨ Mother’s Day Special

Mom receives 50% OFF
on any 90-minute massage
when accompanied by one guest paying the regular price.

📅 1–20 August 2026

Every visit also includes:

☕ Welcome Tea to begin the experience with warmth.

🌿 Premium Massage Oil carefully selected for deep relaxation and comfort.

✨ Private Treatment Room designed to offer complete privacy and a peaceful atmosphere.

Because every mother deserves a moment to unwind, recharge, and feel truly appreciated.

📍 Tensei Onsen & Spa at Cassia Rama 9 Hotel

Book your relaxing experience today.

Check our page for the latest promotions, packages, and reservations. We can’t wait to welcome you.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:



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The perfect ending to your wellness escape. 🌸

A truly relaxing experience doesn’t end when you leave the onsen.

At Tensei Onsen & Spa, your wellness journey continues with peaceful moments overlooking the city, a warm cup of tea, delightful Japanese treats, and beautiful corners designed for you to slow down, breathe, and simply enjoy the present.

Whether you’re visiting after work, spending quality time with someone special, or treating yourself to a well-deserved self-care day, every detail is thoughtfully prepared to help you recharge—inside and out.

Take your time. Relax a little longer. Capture beautiful memories before heading home.

✨ Your wellness moment starts here.

📍 Tensei Onsen & Spa at Cassia Rama 9 Hotel

Book your relaxing experience today.

Check our page for the latest promotions, packages, and reservations. We can’t wait to welcome you.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:



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Your body whispers before it screams. Listen to it. ✨

Long hours at your desk, endless meetings, and daily stress often settle around your neck and shoulders before you even notice.

At Tensei Onsen & Spa, Cassia Rama 9, every treatment is thoughtfully designed to help release built-up tension, encourage deep relaxation, and leave you feeling refreshed from head to toe.

Take a well-deserved pause, breathe a little deeper, and let experienced therapists take care of the rest.

Your next moment of calm is waiting.

📩 Check our latest promotions and book your appointment via our page inbox today.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:



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Every great journey to wellness begins with a simple ritual.

In Japan, true relaxation isn’t rushed—it’s experienced, one mindful moment at a time.

Feel the comforting warmth of our authentic sauna as gentle steam embraces your body, helping to release built-up tension, refresh your senses, and prepare you for the perfect onsen experience.

Sometimes, the best investment you can make is taking a moment for yourself.

📍 Tensei Onsen & Spa
Located at Cassia Rama 9 Bangkok

✨ Explore our latest offers and reserve your wellness escape today.

Visit our page or send us a message—we’re here to help you plan your perfect spa day.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:



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The city never stops… but you can.

Above the rhythm of Bangkok, discover a place where time slows down and every breath feels lighter.

Immerse yourself in the warmth of a traditional Japanese onsen while taking in the breathtaking skyline from above.

Whether you’re unwinding after work, enjoying a peaceful weekend, or simply taking time for yourself, every visit is an invitation to reconnect with what truly matters.

Because true luxury isn’t about escaping the city—it’s about finding calm within it.

📍 Tensei Onsen & Spa
Located at Cassia Rama 9 Bangkok

✨ Reserve your onsen experience today.

Check the latest promotions and booking details on our page or send us a message—we’ll be happy to assist you.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:



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Relax Above the City. Recharge Within.

Take a moment to slow down with our whirlpool bath Onsen Experience at Tensei Onsen & Spa, located inside Cassia Rama 9 Bangkok.

Let the warm water and gentle hydrotherapy jets help ease muscle tension, improve circulation, and leave you feeling refreshed—while enjoying a beautiful panoramic city view.

Whether it’s after work, after the gym, or simply because you deserve it, your perfect wellness escape is waiting.

✨ Your relaxation starts here.

📩 Book your experience via our page Inbox today.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:

bathOnsen

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Some experiences speak louder than any advertisement.

⭐️⭐️⭐️⭐️⭐️
“Quiet place, lovely staff, best service… must visit this place.”

The best compliment we receive is seeing our guests leave feeling refreshed, relaxed, and genuinely cared for.

At Tensei Onsen & Spa, every visit is designed to give you more than just a wellness session. Enjoy the calming atmosphere, soak in authentic Japanese-style onsen, recharge in our sauna, and let the peaceful city view help you disconnect from everyday stress.

Whether you’re ending a busy workday or planning a well-deserved self-care escape, your moment of relaxation is waiting on the 22nd floor of Cassia Rama 9 Bangkok Hotel.

✨ Thank you for trusting us to be part of your wellness journey.

📩 Check the link in our profile or send us a DM to reserve your preferred time.
We can’t wait to welcome you.

🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE:

Every corner offers a sophisticated blend of natural light and unparalleled city views.

Let the stresses of the day melt away as you soak in our mineral-rich waters, all while admiring the iconic Bangkok cityscape.

It’s more than just a spa; it’s a journey for your senses.

Whether you’re a busy professional needing a brief reprieve or a couple seeking a romantic escape, Tensei Onsen & Spa provides the perfect urban retreat.

🌟 Unlock Your Urban Sanctuary.

Book your onsen experience or signature spa treatment today and elevate your well-being.

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🕛 Opening Hours

Daily | 12:00 PM – 24:00 AM

📞 Contact Us
Phone: 02-000-4279
Mobile: 095-779-7636
LINE: