https://www.meetingscanada.com/marriott-chateau-champlain-acquired-tidan-hospitality/ Montréal-based Tidan Hospitality and Real Estate Group acquired the Montréal Marriott Château Champlain, effective April 16, 2018. Atlific Hotels will continue to provide hotel management services during the transition. The 611-room property was constructed by CP Hotels in celebration of Expo 67. It was designed by French-Canadian architects Roger D’Astous—a student of Frank Lloyd Wright—and Jean-Paul