Sort of, official. For personal interest as well as for benefit of others, I will start and manage a list of hotels that have changed category. I'll start with the ones I know and any that you post below, I will update periodically.

One request: please add your hotels in the format below as it will be easier for me to update without having to look up the location of each. I will also keep this in a spreadsheet.

Through post #68

Country/ State (US)/ City/ Hotel name/ Old/ New
Albania Tirana Sheraton Tirana 2 3
Argentina Buenos Aires Park Tower 4 5
Argentina Buenos Aires Sheraton Buenos Aires Hotel and Convention Center 2 3
Argentina Buenos Aires Sheraton Liberatador 2 3
Austria Salzburg Hotel Schloss Fuschl 5 6
Austria Vienna Hotel Bristol 4 5
Austria Vienna Hotel Imperial 5 6
Belgium Brussels Le Meridien 3 4
Brazil Macaé Four Points by Sheraton Macaé 3 2
Brazil Rio de Janeiro Sheraton Barra 4 5
Brazil Rio de Janeiro Sheraton Barra Hotel & Suites 3 4
Canada Calgary Four Points by Sheraton Calgary West 2 3
Canada Calgary The Westin Calgary 3 4
Canada Edmonton The Westin Edmonton 2 3
Canada Laval Sheraton Laval Hotel 2 3
Canada Niagara Falls Sheraton Fallsview Hotel & Conference Center 3 4
Canada Ottawa Sheraton Ottawa Hotel 3 4
Canada Ottawa The Westin Ottawa 3 4
Canada Richmond Hill Sheraton Parkway Toronto North Hotel & Suites 2 3
Canada Saskatoon Sheraton Cavalier Saskatoon Hotel 2 3
Canada Toronto Four Points by Sheraton Toronto Lakeshore 2 3
Canada Toronto Le Royal Méridien King Edward 3 4
Canada Toronto Sheraton Centre Toronto Hotel 3 4
Canada Toronto The Westin Harbour Castle 3 4
Canada Vancouver Sheraton Vancouver Wall Centre 3 4
Canada Vancouver The Westin Bayshore 3 4
Canada Vancouver The Westin Grand 3 4
Canada Victoria The Westin Bear Mountain Victoria Golf Resort & Spa 3 4
Chile Santiago Four Points Santiago 1 2
China Haikou Sheraton Haikou Resort 1 2
China Hong Kong Sheraton Hong Kong Hotel & Towers 4 5
China Sanya Sheraton Sanya Resort 3 4
China Shanghai Le Méridien She Shan Shanghai 3 2
China Shanghai St. Regis Hotel, Shanghai 4 5
China Tianjin Sheraton Tianjin 2 3
Colombia Medellin Four Points Medellin 3 2
Croatia Zagreb Westin 2 3
Finland Helsinki Hotel Kamp 4 5
France Paris Prince de Galles 5 6
France Paris Westin 5 6
France Versailles Trianon Palace 4 5
French Polynesia Bora Bora Bora Bora Nui Resort and Spa 6 7
French Polynesia Bora Bora St. Regis Resort, Bora Bora 6 7
Germany Dresden The Westin Bellevue 2 3
Germany Hamburg Le Méridien Hamburg-Stillhorn 1 2
Germany Leipzig The Westin Leipzig 1 2
Germany Munich Four Points by Sheraton München Olympiapark 2 3
Germany Munich Le Meridien 3 4
Greece Athens Grande Bretagne 4 5
Greece Crete Blue Palace Hotel & Spa 5 6
Greece Mykonos Santa Marina Resort & Villas 5 6
Guatemala Guatemala City The Westin Camino Real, Guatemala 2 3
Hungary Budapest Budapest Le Méridien 3 4
India Agra Mughal Sheraton 1 2
India Ahmedabad Le Méridien Ahmedabad 1 2
India Bangalore ITC Hotel Windsor Sheraton & Towers 4 5
India Bangalore Le Méridien Bangalore 4 5
India Calcutta ITC Hotel Sonar Bangla Sheraton & Towers 2 3
India Chennai Chola Sheraton 3 4
India Chennai ITC Hotel Park Sheraton & Towers 3 4
India Chennai Le Royal Méridien Chennai 2 4
India Cochin Le Méridien Cochin Resort & Convention Centre 1 2
India Hyderabad ITC Hotel Kakatiya Sheraton & Towers 3 5
India Jaipur Rajputana Palace Sheraton 2 3
India Jaipur Le Méridien Jaipur 2 3
India Mumbai ITC Hotel Grand Central Sheraton and Towers 3 4
India Mumbai Le Royal Méridien Mumbai 3 4
India New Delhi ITC Hotel Maurya Sheraton & Towers New Delhi 3 5
India New Delhi LeMeiriden New Delhi 3 4
India Pune Le Méridien Pune 3 4
Indonesia Tabanan Le Méridien Nirwana Golf & Spa Resort 3 1
Ireland Dublin Westin Dublin 4 5
Italy Florence Grand Hotel 5 6
Italy Florence Westin Exxcelsior 5 6
Italy Milan 4 Points 3 4
Italy Milan Sheraton Diana Majestic 4 5
Italy Milan Westin Palace 4 5
Italy Porto Cervo Hotel Cala di Volpe 6 7
Italy Porto Cervo Hotel Romazzino 6 7
Italy Porto Cervo Hotel Pitrizza 6 7
Italy Rome Westin Excelsior 5 6
Italy Venice Hotel Danieli 5 6
Italy Venice Hotel Des Bains, Lido Resort 4 5
Italy Venice Hotel Gritti Palace 6 7
Italy Venice Westin Exxcelsior, Lido Resort 5 6
Japan Miyazaki Sheraton Grande Ocean Resort 3 4
Japan Nagoya The Westin Nagoya Castle 2 3
Kuwait Kuwait City Sheraton Kuwait Hotel & Towers 4 5
Malaysia Langkawi Westin Langkawi 2 4
Maldives Fesdu Island W Retreat & Spa - Maldives 6 7
Mexico Mexico City Sheraton Suites Santa Fe, Mexico City 3 4
Mexico Puerto Vallarta The Westin Resort & Spa Puerto Vallarta 3 4
Mexico San Luis Potosi The Westin San Luis Potosi 3 2
Netherlands Amsterdam Pulitzer 4 5
Nigeria Abuja Le Méridien Abuja 2 4
Nigeria Port Harcourt Le Méridien Ogeyi Place 4 5
Oman Muscat Sheraton Oman 2 4
Portugal Lisbon Sheraton Lisboa Hotel & Spa 2 4
Singapore Singapore Sheraton Towers 3 4
South Korea Busan Westin Chosun 3 4
South Korea Seoul Sheraton Grande Walkerhill 4 5
South Korea Seoul W Seoul 4 5
South Korea Seoul Westin Chosun 4 5
Spain Barcelona Le Meridien 4 5
Spain Madrid Westin Palace 4 5
Spain Maspalomas, Gran Canaria Sheraton Salobre Golf Resort & Spa 2 3
Spain San Sebastien Maria Christina 4 5
Spain Santa Cruz De Tenerife Sheraton Mencey Hotel, Santa Cruz de Tenerife 2 3
Spain Seville Hotel Alfonso 5 6
Spain Valencia Westin 4 5
Sweden Stockholm Sheraton Stockholm 3 4
Thailand Bangkok Le Meridien Plaza Athanee 2 3
Thailand Bangkok Sheraton Grand Sukhumvit 3 4
UAE Dubai Four Points Bur Dubai 3 4
UAE Dubai Sheraton Jumeirah Beach Resort & Towers 4 5
UK London Belgravia 4 5
UK London Park Lane 4 5
UK London Sheraton Park Tower 5 6
US AZ Scottsdale The Westin Kierland Resort & Spa 4 5
US AZ Tempe Sheraton Phoenix Airport Hotel Tempe 2 3
US CA Dana Point St Regis Monarch Beach 5 6
US CA Long Beach The Westin Long Beach 3 4
US CA Los Angeles Four Points by Sheraton Los Angeles International Airport 1 2
US CA Los Angeles The Westin Los Angeles Airport 2 3
US CA Los Angeles W Los Angeles Westwood 4 5
US CA Newark W Silicon Valley 3 4
US CA Palo Alto The Westin Palo Alto 4 5
US CA Pasadena Sheraton Pasadena 4 3
US CA San Diego W San Diego 4 5
US CA San Diego Four Points by Sheraton San Diego 2 3
US CA San Diego THE US GRANT 4 5
US CA San Francisco Le Meridien San Francisco 4 5
US CA San Francisco Sheraton Fisherman's Wharf Hotel 3 4
US CA San Francisco W San Francisco 4 5
US CA Sunnyvale Sheraton Sunnyvale Hotel 3 4
US CO Aspen St. Regis 5 6
US CO Denver The Westin Tabor Center 3 4
US CT Norwalk Four Points by Sheraton Norwalk 2 3
US CT Stamford The Westin Stamford 3 4
US DE Dover Sheraton Dover Hotel 2 3
US DE Wilmington Sheraton Suites Wilmington 3 4
US FL Fort Lauderdale Sheraton Suites Cypress Creek Ft. Lauderdale 2 3
US FL Hallandale The Diplomat Country Club & Spa 4 5
US FL Hollywood The Westin Diplomat Resort & Spa 4 5
US FL Key West Sunset Key Guest Cottages, A Westin Resort 6 7
US FL Maitland Sheraton Orlando North Hotel 3 2
US FL Miami Sheraton Miami Mart Hotel 2 3
US FL Miami Beach Four Points by Sheraton Miami Beach 3 4
US FL Orlando Sheraton Studio City Hotel 2 3
US FL Orlando Sheraton Suites Orlando Airport 2 3
US FL Plantation Sheraton Suites Plantation, Ft. Lauderdale West 2 3
US FL Tampa Sheraton Suites Tampa Airport 2 3
US HI Kauai Princeville Resort 5 6
US HI Koloa, Kauai Sheraton Kauai Resort 4 5
US HI Waikiki Royal Hawaiian 4 5
US HI Waikiki Sheraton Moana Surfrider 4 5
US HI Waikiki Sheraton Waikiki 4 5
US HI Waikiki W Honolulu - Diamond Head 4 5
US IA Iowa City Sheraton Iowa City Hotel 2 3
US IL Chicago The Westin Chicago River North 4 5
US IL Chicago W Chicago City Center 4 5
US IL Chicago W Chicago Lakeshore 4 5
US IL Fairview Heights Four Points by Sheraton Fairview Heights 2 1
US IL Rosemont Sheraton Gateway Suites Chicago O'Hare 2 3
US IL Rosemont The Westin O'Hare 3 4
US IN Indianapolis Sheraton Indianapolis Hotel & Suites 2 3
US KY Hebron Sheraton Cincinnati Airport Hotel 3 2
US KY Lexington Four Points by Sheraton Lexington 1 2
US LA Baton Rouge Sheraton Baton Rouge Convention Center Hotel 2 3
US LA New Orleans Sheraton New Orleans Hotel 3 4
US LA New Orleans W New Orleans 3 4
US MA Boston The Westin Copley Place, Boston 4 5
US MA Waltham The Westin Waltham-Boston 3 4
US MD Baltimore Sheraton Baltimore North Hotel 2 3
US MI Detroit The Westin Detroit Metropolitan Airport 3 4
US MN Minneapolis Sheraton Minneapolis Midtown Hotel 2 3
US MN Minnetonka Sheraton Minneapolis West Hotel 2 3
US MO Kansas City The Westin Crown Center 2 3
US MO St. Louis Sheraton Westport Plaza Hotel St. Louis 2 3
US NC Chapel Hill Sheraton Chapel Hill Hotel 2 3
US NC Charlotte Four Points by Sheraton Charlotte 1 2
US NC Charlotte The Westin Charlotte 3 4
US NJ Mahwah Sheraton Mahwah Hotel 3 4
US NJ Parsippany Sheraton Parsippany Hotel 3 4
US NV Las Vegas Aladdin Resort & Casino 4 5
US NV Las Vegas The Westin Casuarina Las Vegas Hotel, Casino & Spa 4 5
US NY New York Four Points by Sheraton Manhattan Chelsea 4 5
US NY New York Sheraton Manhattan Hotel 4 5
US NY New York Sheraton New York Hotel & Towers 4 5
US NY New York St Regis New York 6 7
US NY New York The Westin New York at Times Square 5 6
US NY New York W New York - The Court 5 6
US NY New York W New York - The Tuscany 5 6
US NY New York W Times Square 5 6
US NY New York W Union Square 5 6
US NY Plainview Four Points by Sheraton Plainview Long Island 2 3
US OH Akron Four Points by Sheraton Akron West 1 2
US OH Columbus Sheraton Suites Columbus 2 3
US OH Cuyahoga Falls Sheraton Suites Akron/Cuyahoga Falls 2 3
US OK Oklahoma City Four Points by Sheraton Oklahoma City Airport 1 2
US OK Oklahoma City Sheraton Oklahoma City Hotel 2 3
US OR Portland Four Points by Sheraton Portland East 1 2
US OR Portland The Westin Portland 3 4
US PA Chambersburg Four Points by Sheraton Chambersburg 1 2
US PA Philadelphia Four Points by Sheraton Philadelphia Airport 2 3
US PA Philadelphia Sheraton Society Hill Hotel 3 4
US PA Philadelphia Sheraton Suites Philadelphia Airport 2 3
US PA Philadelphia Sheraton University City Hotel 3 4
US PA Philadelphia The Westin Philadelphia 4 5
US PR San Juan Sheraton Old San Juan Hotel 3 4
US SC Greenville The Westin Poinsett, Greenville 2 3
US SC Myrtle Beach Sheraton Myrtle Beach Convention Center Hotel 3 2
US TN Chattanooga The Sheraton Read House Hotel Chattanooga 2 3
US TN Nashville Sheraton Music City Hotel 2 3
US TN Nashville Sheraton Nashville Downtown Hotel 2 3
US TX Dallas Sheraton Suites Market Center 2 3
US TX Dallas The Westin City Center, Dallas 3 4
US TX Dallas The Westin Park Central 2 3
US TX Dallas W Dallas - Victory 4 5
US TX Frisco The Westin Stonebriar Resort, North Dallas 3 4
US TX Houston Sheraton Houston Brookhollow Hotel 1 2
US TX Houston Sheraton North Houston at George Bush Intercontinental 1 2
US TX Houston St. Regis Hotel, Houston 4 5
US TX Houston The Westin Galleria Houston 3 4
US TX Houston The Westin Oaks Houston 3 4
US TX Irving Sheraton Grand Hotel DFW Airport 2 3
US VA Arlington Sheraton Crystal City Hotel 3 4
US VA Reston Sheraton Reston Hotel 3 4
Vietnam Ho Chi Minh Sheraton 3 4



Please note: this list is based on the posts below and please don't hold me responsible for any discrepancies or errors.