Ralph's Coffee Landmark Prince's is a Ralph Lauren coffee shop on the second floor of the Prince's Building in Central, Hong Kong. It sells flat whites and iced Americanos, and drinks can be switched to decaf, soy milk or oat milk at no charge. To reach it, enter the Ralph Lauren store on the first floor and ask for the cafe, or take the escalator up to the second floor. Seating is limited, so a wait forms.