thanks Paul2! wasnt aware of the The Siam...added it to the list


Top Luxury Bangkok Hotels (in no particular order):

Peninsula (riverside)
Mandarin Oriental (riverside)
Shangri-La (riverside)
Sukhothai (Sathorn Road)
Four Seasons (Rajadamri Road)
Grand Hyatt Erawan (Rajadamri Road)
St Regis (Rajadamri Road) (opening in Jan 2011, but anticipated to be at this level)
Siam Kempinski (Rama I Road behind Siam Paragon)


Second Tier below Top Luxury (in no particular order):

Hiltons
Conrad (Wireless Road)
Hilton Millenium (riverside)

Intercons
Intercontinental (Ploenchit Road)

Marriotts
JW Marriott (Sukhumvit Road Soi 3)
Marriott Resort (riverside)
Renaissance Rajaprasong (Rajadamri Road)
Courtyard (behind Rajadamri Road)

Starwoods
Royal Orchid Sheraton (riverside)
Sheraton Grande Sukhumvit (Sukhumvit Road)
Westin (Sukhumvit Road)
Plaza Athenee, a Le Meridien Hotel (Wireless Road)
Le Meridien Surawong (Surawong Road)

Accors
Sofitel Silom (Silom Road)
Pullman (Victory Monument area)
Vie Hotel
Sofitel Sukhumvit (opening July 2011 but anticipated to be on list)

Others
Metropolitan (Sathorn Road)
Banyan Tree (Sathorn Road)
Pan Pacific (Rama IV-Silom)
Dusit Thani (Rama IV-Silom)
Imperial Queen's Park (Sukhumvit Road)
Swissotel Nailert Park-Raffles (Wireless Road)
Anantara (Rajadamri Road)
Centara Grand at Central World
Landmark (Sukhumvit Road)
Grande Millennium (Asoke Road)
Okura (Wireless Road) (opening 2012 but anticipated to be on list)

Boutiques
LeBua@State Tower
Dream
Prince Chakrabongse Villas
Eugenia
Siam@Siam
The Siam (opening June 2011 but anticipated to be on list)