Let’s Relax Onsen Lumphini Review: Prices, Ratings & Tips 2026

Quick facts

See Let’s Relax Onsen & Spa Lumphini prices & book

What the 279 ratings say

The headline number is 4.9★, and the split behind it is just as strong: of 279 ThaiHand ratings for this branch, 267 are 5★ (95.7%) and 8 are 4★ (2.9%). The detailed scores are tight too: ambience 4.96, cleanliness 4.96 and staff 4.92.

Most guests come for the baths. 241 of the 279 ratings are for the onsen menus (the pass, or the pass with Akasuri scrub), and those average 4.98. The other 38 ratings are for massages, which average 4.58. In short, this is an onsen first, with massages as a relaxing add-on.

What guests love

Space. “Spacious”, “wide” and “not crowded” come up again and again, in English and Thai.

“This branch is very ample and best vibe”

“สถานที่สะอาด สงบ กว้างขวาง ดีมาก มาสะดวก” — “Clean, calm and spacious. Very good, and easy to get to.” (translated from Thai)

The bathing circuit. Guests describe several pools plus dry and wet heat rooms, a salt room, a hot-stone room and a cool room.

“There are five springs and two streams (dry and wet). I love the 岩盤浴”

(岩盤浴 is the Japanese hot-stone bed bath.)

Location. One guest called it “The best onsen in center of bangkok”, and another noted it is “reachable by MRT”.

Water quality and cleanliness. “The quality of water is very good” is a typical comment, and cleanliness is the branch’s joint-highest detailed score.

The staff. “Nice , polite, friendly and helpful staff”, as one guest put it.

Massages and add-ons

The onsen is the main event, but several guests pair it with a treatment. One reviewer summed up their massage as “BEST MASSAGE SHOP”, and a Thai guest who booked a Thai massage mentions being served mango sticky rice afterwards. The Akasuri scrub also gets warm words: one Thai guest says it was thorough, left their skin soft, and finished with a light massage.

“Both were masters. We really appreciated their excellent service.” (Thai Massage)

Tip: tell your therapist the pressure you like at the start of the session.

Prices and packages

All prices below are ThaiHand listing prices for the Lumphini branch.

Which package makes sense

First visit, baths only: Onsen, ฿750. About 85% of this branch’s ThaiHand ratings (238 of 279) are for this menu, and it’s where the branch scores best.

Onsen + Akasuri scrub: ฿1,800. That’s ฿1,050 more than the plain pass for the 45-minute Akasuri body scrub. Both ThaiHand reviews of it are 5★.

Onsen, then a massage. On ThaiHand these are separate menus. The plain pass plus a 60-minute Foot Massage comes to ฿1,625 at list prices; the pass plus the 90-minute Dream Package comes to ฿1,950. Ask the front desk how the two bookings fit together on the day.

Rules and practical tips

• Book at least a day ahead. The listing’s special note says the voucher is redeemable one day after purchase, so same-day ThaiHand bookings won’t work.
• Closing time is 23:30, half an hour earlier than the Ratchadamri and Thonglor branches.
• Clothing is provided. One guest mentions it runs a little snug, so ask for a bigger size if you need one.
• Bring a glasses case if you wear glasses, so you have somewhere to keep them while you use the sauna and steam rooms.
• Allow a few extra minutes on your first visit to find the entrance.
• Go at a quieter time if you want the pools to yourself; it’s one of the brand’s biggest onsen branches and is popular.
• New to onsen? Read our guide What to expect from onsens in Thailand before you go. For general etiquette, see Massage safety tips for tourists.

Who it suits best

Great for you if you:

• want a big, calm bathhouse in central Bangkok with several pools and heat rooms
• are staying around Lumphini or Sathorn and want an evening plan that runs late
• like a long, slow soak, with a scrub or massage as a bonus

Consider another option if you:

• want a private, just-for-two onsen room. This is a shared bathhouse with several pools
• need to book for today. The one-day voucher rule makes this a plan-ahead spot

Lumphini vs other Let’s Relax onsen branches

Let’s Relax runs several onsen branches on ThaiHand, all at the same ฿750 onsen price.

Ratchadamri is about 2.1 km from Lumphini (straight-line), on the 10th floor of Grande Centre Point Prestige. Its listing describes a design inspired by Kyoto’s Higashiyama district. It has the same onsen and massage menu and prices as Lumphini, and stays open until 24:00.

Thonglor is the brand’s most-rated onsen on ThaiHand, with 986 ratings. Lumphini edges it on every detailed score, and one Thai guest called Lumphini “ออนเซนที่ดีที่สุดในกรุงเทพฯ” (“the best onsen in Bangkok”, translated from Thai).

See Let’s Relax Onsen & Spa Ratchadamri prices & book

See Let’s Relax Spa Thonglor prices & book

FAQ

How much is Let’s Relax Onsen Lumphini?
The onsen pass is ฿750 on ThaiHand, up to 13% off on ThaiHand, varies by time slot. The onsen pass with a 45-minute Akasuri scrub is ฿1,800.

Can I book Let’s Relax Onsen Lumphini for today?
Not through a ThaiHand voucher. The listing says vouchers are redeemable one day after purchase, so book at least a day in advance.

What time does Let’s Relax Onsen Lumphini close?
It’s open 10:00–23:30. The Ratchadamri and Thonglor branches stay open until 24:00.

Is Let’s Relax Lumphini a private onsen?
No. It’s a shared bathhouse with several pools, a sauna, a steam room and other heat rooms, according to guest reviews. If you want a private bath, look for a private onsen room instead.

Can I add a massage to my onsen visit?
Yes. Massages are booked as separate menus on ThaiHand, from a 60-minute Foot Massage at ฿875 to a 90-minute Hot Stone Massage at ฿2,400. Massage bookings average 4.58 across 38 ThaiHand ratings.

Which Let’s Relax onsen branch is best?
All four onsen branches on ThaiHand rate 4.8–4.9★ and charge ฿750 for the onsen. Lumphini has the highest detailed scores of the four, Thonglor has by far the most ratings, and Ratchadamri stays open until 24:00.

Prices/ratings from ThaiHand partner listings, checked 30 October 2026; prices change.