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 The Peninsula Bangkok
Priced on the same night, 2026-10-10: The Peninsula Bangkok is $265 a night less. They are 6.4 km apart.
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
The Peninsula Bangkok comes in at $365 a night with a 9.3 rating across 1,404 reviews, against The Siam's $549 and only 108 reviews with no rating shown. Both are five-star, but the Peninsula's scale, service reputation and river position make it the stronger booking at a lower price. The Siam has the hot tub in its favour and a waterfront setting of its own, but the numbers and the guest volume favour the Peninsula decisively.
The look and the feel
The Siam
The Siam sits on the Chao Phraya in Dusit, a small art deco-inflected property built around a collection of vintage furniture, teak panelling and 1930s Thai-European decorative pieces assembled by its owners. Rooms have fireplaces and freestanding tubs, which is unusual for Bangkok and gives the place a colonial-house intimacy rather than a tower-hotel feel. The public spaces are compact and dim, more private members' club than grand hotel lobby, with a muay thai gym and a small fleet of vintage cars adding to the eccentric, curated character. It draws a design-literate, quieter crowd who want atmosphere over scale.
Right for travellers who want a small, idiosyncratic property with real design personality and don't mind trading scale and services for atmosphere.
The Peninsula Bangkok
The Peninsula Bangkok occupies the west bank of the Chao Phraya opposite the old city, a modernist tower with a soaring atrium lobby, dark wood, brass fittings and a river view that runs through nearly every public room and guestroom. It has the polish of a long-established international flagship: marble bathrooms, a spa built around traditional Thai treatment rooms, and a riverside pool that runs almost to the water's edge. The scene at dusk, with longtail boats crossing in front of the temples on the opposite bank, is one of the best hotel views in the city. It draws a broader, more international five-star crowd, business and leisure both.
Right for travellers who want a large, polished five-star hotel with river views, deep service infrastructure and a strong review record.
The Siam gives up scale and guest volume for its boutique intimacy, and lacks the Peninsula's broader international name recognition; the Peninsula, for its lower price, gives up the in-room hot tub The Siam offers.
The Siam is the more characterful place to sit still in, with its curated antiques and quiet teak rooms, but the Peninsula is the more beautiful place to simply be, given its river frontage and the light off the water at every hour.
The numbers
| The Siam | The Peninsula Bangkok | |
|---|---|---|
| Price, same night | $644 | $379 |
| Guest rating | — | 9.3/10 |
| Reviews | 108 | 1404 |
| Stars | ★★★★★ | ★★★★★ |
| Facilities on our list | 7 | 7 |
| Distance apart | 6.4 km |
What one has that the other doesn't
Only The Siam has
- Waterfront
Only The Peninsula Bangkok has
- Hot tub
What guests actually say
The Siam
- attentive helpful butlers
- boat service to activities
- beautiful decor and villas
- slow hot water and door access issues
The Peninsula Bangkok
- attentive friendly staff
- excellent breakfast and food
- immaculate presentation
- feels old in places
“Immaculate presentation , great food and hospitality from all staff.”
The Siam's guests come away happier, praising personal, attentive butler service and unique surroundings, while Peninsula reviews are shorter and one guest called the hotel old.
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
The Peninsula Bangkok
- Deluxe Twin RoomBreakfast Included$370
- Deluxe King RoomBreakfast Included$370
- Deluxe KingBreakfast Included$391
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!
The Peninsula Bangkok
10/10
“We had the best stay , we look forward to returning next year :)”
Pure class
Immaculate presentation , great food and hospitality from all staff.
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
The Peninsula Bangkok
Luxury Accommodation with River Views The Peninsula Bangkok - SHA Extra Plus offers luxury guest rooms with stunning views of the Chao Phraya River. Each room is equipped with modern amenities and elegant decor, ensuring a comfortable stay. Top-Notch Facilities for Relaxation and Recreation Guests can unwind at the outdoor pool, stay active at the fitness…
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
The Peninsula 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
- Business center
- Terrace
- Garden
- Lift / Elevator
Where they are
3/2 Thanon Khao, Vachirapayabal, Bangkok, Bangkok, 10300333 Charoennakorn Road, Klong-Tonsai, Klongsan
More comparisons in Bangkok
Capella Bangkok vs Four Seasons Hotel Bangkok at Chao Phraya RiverCapella Bangkok vs The SiamCapella Bangkok vs The St. Regis BangkokCapella Bangkok vs The Peninsula BangkokFour Seasons Hotel Bangkok at Chao Phraya River vs The SiamFour Seasons Hotel Bangkok at Chao Phraya River vs The St. Regis BangkokFour Seasons Hotel Bangkok at Chao Phraya River vs The Peninsula BangkokThe Siam vs The St. Regis Bangkok
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