Preferred Hotels & Resorts has added 15 hotels in countries such as Italy, India, Brazil, Mexico and the US during the third quarter. Six of the properties are brand-new openings, including the 142-room Artyzen Singapore, which will open next month and offer an 82-foot cantilevered infinity pool, and the 141-room Global Ambassador in Phoenix, which will debut in December and feature original artwork from Arizona artist Michael Carson. Hotel Business