10/10
One of the best hotels I have stayed at. The staff were fantastic!! Nat was the best. He arranged everything we needed!
Bangkok · head to head
The Siam vs Rosewood Bangkok
Priced on the same night, 2026-10-10: Rosewood Bangkok is $337 a night less. They are 6.2 km apart.
Rosewood Bangkok
$334/ night, 2026-10-10
+ $21 taxes & fees · Free cancellation
Book takes you to the exact room at that rate on HotelDupe's booking partner. Confirmation arrives by email; manage or cancel any time from Find your booking.
The honest take
Book Rosewood Bangkok. It is cheaper at $356 against The Siam's $551, carries a guest rating of 9.6 from 869 reviews (The Siam shows no aggregated rating and only 108 reviews), and sits on Ploenchit Road with direct BTS access, which is the more useful base for a city stay. The Siam has one genuine edge, its riverside setting, but that alone doesn't offset the price and location gap for most travellers.
The look and the feel
The Siam
The Siam occupies restored teak villas on a bend of the Chao Phraya in Dusit, a part of Bangkok that stays quiet and green rather than commercial. Rooms come with fireplaces and private outdoor tubs, an odd but pointed nod to old Siamese planters' houses crossed with colonial comfort, all dark wood, patinated brass fittings and shuttered windows that catch river light in the late afternoon. The pool and gardens run down toward the water, and the whole property feels like a private compound rather than a hotel, with a slow, unhurried air that suits people who want to disappear for a few days.
The Siam suits travellers who want seclusion, river views and a slower, colonial-villa atmosphere away from the commercial centre.
Rosewood Bangkok
Rosewood Bangkok is housed in a sculptural glass tower on Ploenchit designed to resemble a cluster of jewels rising from a low podium, all sharp angles and reflective panels that change colour with the sky. Inside, the lobby favours dark stone, brass detailing and Thai silk accents against a restrained, contemporary palette, with the sense of a hotel built for a global business and social crowd rather than for retreat. The nightclub and terrace bar give it an evening life the riverside Siam doesn't attempt, and the BTS connection puts the whole city, malls, temples, embassies, within easy reach.
Rosewood Bangkok suits travellers who want a central, well-connected base with strong service, nightlife and easy transit access.
The Siam gives up Rosewood's hot tub and central transit access, and asks a much higher price for a quieter, more removed riverside setting.
The Siam is the more characterful and beautiful place to sit still in, with its teak villas and river light, while Rosewood is the sharper piece of architecture but a more generic luxury interior once you're inside it.
The numbers
| The Siam | Rosewood Bangkok | |
|---|---|---|
| Price, same night | $671 | $334 |
| Guest rating | — | 9.6/10 |
| Reviews | 108 | 869 |
| Stars | ★★★★★ | ★★★★★ |
| Facilities on our list | 7 | 7 |
| Distance apart | 6.2 km |
What one has that the other doesn't
Only The Siam has
- Waterfront
Only Rosewood Bangkok has
- Hot tub
What guests actually say
The Siam
- attentive helpful butlers
- stunning decor and design
- excellent food and breakfast
- slow hot water
- door access issues
“One of the best hotels I have stayed at.”
Rosewood Bangkok
- friendly attentive staff
- clean well-kept property
- quick service
- pillows too soft
- heavy traffic nearby
“The staff's friendliness and quick service”
The Siam's guests come away happier, describing an outstanding, memorable experience with attentive butlers and stunning design, while Rosewood's reviews are shorter and note minor comfort and traffic issues.
Rooms & rates, 2026-10-10
The Siam
- Siam SuiteBreakfast Included$638
- Siam Suite(1 King Bed)Breakfast Included$638
- Suite King Size BedBreakfast Included$692
Rosewood Bangkok
- Double Room - Accommodation Only - Deluxe Easy Access One BedRoom Only · free cancellation$323
- Double Room - Accommodation Only - Deluxe One BedRoom Only · free cancellation$323
- Double DeluxeRoom Only$334
In guests' own words
The Siam
10/10
“Honeymoon approved ”
This Resort was absolutely amazing. The service was outstanding. It was our Honeymoon annd I anm so happy I picked this hotel. Our Butler Zul was so attentive and kind. He anticipated our needs and reserved the hotel boat for us to and from where we wanted to go and we felt so safe. The breakfast was some of the best food my husband and I have had and the afternoon tea was delightful. The pool was wonderful and entir
10/10
“Missing Siam already”
The hotel was amazingly beautiful and well appointed. We stayed in a villa and it was heaven. Our butler was so helpful in making arrangements for the hotel boat to take us to our activities and gave us great recommendations on this to do. We misses him and the rest of the friendly hotel team the minute we left!
Rosewood Bangkok
7/10
“This hotel feels like home and i’ll come again.”
The staff are amazing.. super nice attentive and very helpful. Too bad i couldnt rate the facilities fairly as i didnt use any of them
- all the pillows are soft. Usually a firmer pillows are used in combination with the soft ones like four seasons hotels and many others. This caused me pain in neck. - please add milk creamer sachets for the espresso mini bar
9/10
“Wonderful stay and a fantastic holiday escape”
The staff's friendliness and quick service
The traffic nearby was pretty heavy all day
About each
The Siam
Luxurious Spa and Recreational Amenities Indulge in massages, body treatments, and facials at the spa. Enjoy the outdoor pool, sauna, and 24-hour fitness center for relaxation. Dining Options and Entertainment Savor Thai cuisine at Chon Restaurant or opt for 24-hour room service. Unwind at the bar/lounge, poolside bar, or coffee shop/cafe. Elegant…
Check-in — · Check-out 12:00 PM
Rosewood Bangkok
Luxurious Accommodation and Amenities Rosewood Bangkok offers air-conditioned rooms with free WiFi, free private parking, and room service. Each room is equipped with modern amenities including a TV, safety deposit box, and a private bathroom with free toiletries. Relaxation and Recreation Guests can unwind at the hotel's terrace, sauna, hot tub, outdoor…
Check-in — · Check-out 12:00 PM
Facilities, in full
The Siam
- Elevator
- Fitness facilities
- Free airport transportation
- Supervised childcare/activities
- ATM/banking
- Shopping on site
- Conference space
- Library
- Free breakfast
- Safe-deposit box at front desk
- Free newspapers in lobby
- Porter/bellhop
- Express check-out
- Limo or town car service available
- Full-service spa
- Internet access in public areas - high speed
Rosewood Bangkok
- Fitness facilities
- WiFi available
- Free WiFi
- Parking
- Free Parking
- Non-smoking rooms
- Air conditioning
- Fitness center
- Swimming pool
- 24-hour front desk
- Restaurant
- Room service
- Terrace
- Family rooms
- Lift / Elevator
- Laundry
Where they are
3/2 Thanon Khao, Vachirapayabal, Bangkok, Bangkok, 103001041/38 Ploenchit Road (Access to BTS Ploenchit) , Lumpini, Pathumwan
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Rates are live for 2026-10-10, one night, two guests, fetched together so the two are comparable. Facilities and reviews are from each hotel's own listing. The honest take is written by our AI from the listing, the reviews and what is widely known about each hotel. HotelDupe earns a commission if you book, which never changes the verdict. All comparisons