The 1983 Bangkok landmark has refreshed all 335 accommodations while adding private-pool stays, a Jim Thompson suite and upgraded event and wellbeing spaces.
Anantara Siam Bangkok's USD 50 million transformation includes new Garden Pool Suites and Villas set within the hotel's tropical gardens.
- Anantara Siam Bangkok has completed a comprehensive USD 50 million enhancement of the landmark hotel, which originally opened in 1983.
- All 335 guestrooms, suites and villas have been reimagined, with new Garden Pool Suites and Villas adding private pools and indoor-outdoor living space.
- The transformation includes the Jim Thompson Explorer Suite, redesigned meetings and events venues, an upgraded Anantara Spa and expanded fitness and outdoor wellness facilities.
- Key heritage features, including the hotel's 100-metre lobby mural by Paiboon Suwannakudt, have been preserved as part of the refurbishment.
(NEWS) BANGKOK, Thailand, 2026-Sep-09 — /Travel PR News/ — Anantara Siam Bangkok Hotel has emerged from a USD 50 million transformation that reaches across every guestroom, suite and villa while extending into wellness, events and other public-facing parts of the property. The investment gives one of Bangkok’s long-established luxury hotels a broad physical reset while retaining the Thai design features that have shaped its identity for more than four decades.
The project, detailed in a September 9 update from Minor Hotels, covers all 335 accommodations at the central Bangkok property. It also introduces private-pool lodging within the hotel’s tropical gardens and a two-bedroom suite created through a partnership with Thai silk house Jim Thompson.
Originally opened in 1983 and designed by hotel architect George Wimberley, the property has retained some of its best-known heritage elements through the refurbishment. Among them is the 100-metre hand-painted mural overlooking the lobby by Thai artist Paiboon Suwannakudt, along with 19 ceiling panels depicting “Heavens in Thai Thought.” The hotel says the mural was preserved as part of the wider restoration rather than replaced by the new design programme.
All 335 rooms, suites and villas reworked
The accommodation overhaul spans Deluxe Rooms, Siam Suites, Anantara Suites and the Presidential Suite. Interiors use teak wood, handcrafted detailing and silk accents, while bathrooms have been rebuilt with marble finishes, new vanities, lighting and contemporary fittings.
A key addition is the collection of Anantara Garden Pool Suites and Villas, set within landscaped gardens and designed around private pools and indoor-outdoor living areas. The format gives guests a more residential-style option within the urban hotel while keeping them close to Bangkok’s shopping, business and cultural districts.
The transformation also introduces the Jim Thompson Explorer Suite, a two-bedroom accommodation inspired by a Thai summer home. Created through a partnership with Jim Thompson, the suite combines polished teak flooring, painted panelled walls and curated artwork with an open-plan living and dining area and a private library.
Dining, events and wellness updated around the accommodation overhaul
The hotel’s nine restaurants and bars remain a major part of the guest offering. They include Spice Market for Thai cuisine, Biscotti for Italian dining, Shintaro for Japanese food, Madison Steak Avenue, Guilty Bangkok, Aqua Bar, Mocha & Muffins, The Lobby and The Garden Terrace.
Meetings and events have also been included in the investment. The Grand Ballroom and the hotel’s wider collection of meeting rooms and event spaces have been redesigned and equipped with updated technology for conferences, weddings, gala dinners and smaller functions.
On the wellness side, Anantara Spa has undergone a full transformation, while the Siam Sports Club now includes a Technogym-equipped fitness centre and Pilates studio. New outdoor facilities add a Muay Thai boxing ring, a rock-climbing wall and a functional training zone.
The refurbishment places contemporary amenities alongside features that connect the hotel to Thai art and design, rather than replacing its established visual identity. That balance is central to the property’s positioning as it competes in Bangkok’s continually evolving luxury-hotel market.
Anantara Hotels & Resorts is part of Minor Hotels. The brand operates more than 50 hotels and resorts across Asia, Europe, Africa, the Middle East and the Indian Ocean, while Minor Hotels says its broader portfolio includes more than 640 hotels, resorts and branded residences in operation or committed development across 67 countries.
