Why is Sheraton Suzhou Wugong a five-star hotel and Sheraton Changshu a four-star hotel?

Starwood Group owns many brands, including St. The Regess, Luxury Select, W Hotel, Westin, Sheraton and Four Points.

St. The Regess, luxury selection, W hotel: positioning luxury, top luxury five-star;

Westin (Westin: positioning an upper-middle-class, super five-star hotel;

Sheraton: It is positioned as high-end and five-star, equivalent to Marriott and Renaissance of Marriott Group. Suzhou Wugong Sheraton is like this.

Four points: positioning mid-range, four-star, equivalent to Marriott Group's "Courtyard by Marriott Hotel". Four Points by Sheraton Changshu Hotel is like this.