I have found that in the many cases where the IHG website does not list a contact e-mail, the easiest solution is to go to Tripadvisor.com, punch in the hotel in the search box and then use the "contact the hotel" function to get a message out. I really hate that IHG took all the contact details out when the redesigned the website a year or so ago. The Tripadvisor provides for an easy go around.