Maxwell Onsen
Tucked along Surawong Road in the Bang Rak district, this urban onsen brings Japanese-style public bathing to central Bangkok, offering a genuine wellness retreat within easy reach of the city's main attractions. Entry is priced at 600 THB and includes access to hot and cold pools, steam rooms, and sauna facilities across a clean, quietly maintained space that visitors consistently describe as peaceful and well-kept. Beyond the bathing facilities, the ground floor entry ticket also covers a complimentary meal at the restaurant on the lower level, along with unlimited ice cream, coffee, and desserts — a notable inclusion that adds considerable value to the experience. The atmosphere skews relaxed and low-key, though visitors should be aware that the sauna and steam areas have a reputation as a gay social space, particularly during busier periods, which may inform expectations depending on what kind of visit someone is looking for. Good to know: Maxwell Onsen operates as a cash or PromptPay-only venue, so arrive prepared as cards are not accepted. Hold onto the entry receipt, as it is required to redeem the complimentary meal. Opening hours are not publicly listed online, so calling ahead before visiting is strongly recommended. Standard onsen etiquette applies — guests should shower thoroughly before entering any shared pools.
Experience hints
Pair your visit. After Maxwell Onsen, round out your day in Bangkok with contrasting stops nearby.
Visitor Reviews
I came here 2 times, Saturday and Monday. Here is my review: Facilities: nice, clean. Lower level has an eating area where you can have one main course and unlimited ice cream, coffee, and desserts. You need to present the receipt when paying the entrance in order to get a main course. Typically, they have beef in curry with rice or fried chicken and Khao soi(Thai's chicken noodle soup). I liked their Khao soi. It was tasty and not spicy. In this area, also there was a salt room and a relax room. They were both small but cozy. The next level above the eating area was the sauna, steamroom and jacuzzi one. Staff refilled drinking water very often. The top level was for private rooms and lounge chairs. You must wear the short and kimono and slippers in all level, except the wet area where everyone must be naked. Staff: helpful but not super friendly. They were hardly smile with anyone. They showed you what to do upon entering. There was one staff watching at the top floor where you can get either private lounge chairs, massage chairs or a room to rest. I had no ideas what he was watching for. 😀 Clients: on Saturday and Sunday , they are super packed. I came on Saturday around 3:30pm and had no problems to get a locker. Then I left at 5:30pm, at that time, the lobby was full of guys who was waiting to get a next available locker. It must be 40 to 50 of them waiting. The majority guys I saw on Saturday was under 30 yrs old. They were hot. However on Monday, most of them were between 30-40 yrs old, less crowded and less hot than those on the weekend. The intimacy happened in the steamroom, and just like any other places, you would meet someone who was easy going while others were picky/selective. Overall, I recommend this onsen because it is clean, good food, and has many handsome customers. The closet BTS station is Sala Daeng, probably 10 minute walk from the station.
Great spot to relax! Entry is 600 THB. Just a heads up, they only accept cash or PromptPay. Make sure you keep your receipt because you can swap it for a free meal at the restaurant on the second floor. The layout is a bit unique but here’s the breakdown: · 1st Floor: Just the reception where you pay and enter. To get to the baths, you need to walk up to the Mezzanine level and then walk the stairs down again. · Mezzanine Level: This is where the locker rooms and toilets are. You'll change here before heading down to the baths. · Basement (accessed from Mezzanine): This is the main bathing area! It has a hot pool, an even hotter one in the middle, and a cold plunge pool. There are also Japanese-style open showers to clean yourself with, a dry sauna, and a steam room. · 2nd Floor: This is the relaxation floor. You need to change to Yukata before coming up here. It has the cafeteria (where you get your free meal!), a lounge with big comfy chairs, and a "salt therapy" room. The air in there feels salty, but I didn't really feel any major effects. · 3rd Floor: Private rooms you can use and a room with massage chairs which is usually fully occupied.. The free meal was a nice bonus! My top pick is definitely the chicken karaage. The salmon rice bowl was just okay, a little bland for my taste. Final heads up: It's a really good place to chill, but if you're planning on having fun in the private rooms, you need to bring your own supplies. They don't provide condoms here.
The experience is entirely what you make of it. If you want undisturbed rest and relaxation in the hot and cold pools, no problem. If you’re looking to get down at dirty - also no problem; you can find it, it will find you. I found just letting go and relaxing, being willing to start a conversation with a stranger, goes a long way. People are friendly just need to break the ice. Staff were friendly. Explained the process (two lockers, what towels to use where, when to use the robe, etc). Exchange your entry ticket for free meal after your visit. Also, bring your own fun supplies as not sure they have them or maybe sell? That was never made clear. THB 600 entry. cash only. I would definitely return.
Tips for Visiting Activities & Tours
Vet Elephant Sanctuaries
Only visit sanctuaries that prohibit riding, use no chains or bullhooks, and let elephants roam freely. Elephant Nature Park in Chiang Mai set the standard. If a place offers painting shows or circus tricks, walk away.
Book Through Klook or GetYourGuide
These platforms offer instant confirmation, free cancellation on most activities, and prices that are often lower than walk-up rates. Compare with local agencies for multi-day trips where negotiation might save more.
Do Outdoor Activities in the Morning
Heat and humidity peak from noon to 3 PM. Schedule jungle treks, cycling tours, and outdoor cooking classes for early morning. Water activities are more flexible since you're in and out of the sea.
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Location Info
Visitor Information
Best time to visit
November – February
Avoid: April – May (peak heat)
Rainy season
May – October
Avg. temperature
25°C – 34°C(77°F – 93°F)
Crowds
Peak: December & January
Getting there
Suvarnabhumi (BKK) and Don Mueang (DMK) airports serve Bangkok with direct flights from most major cities.
Getting around
- •BTS Skytrain (most central areas)
- •MRT Metro (underground)
- •Airport Rail Link (ARL)
- •Chao Phraya Express Boat
- •Grab (ride-hailing app)
- •Metered taxis — always use the meter