There are seven listing in the Chip Guide and most are from Turkey. I don't see that one but you can see most are located in hotels -- like yours -- Hyatt. This might be a new entry. Or, check with Hyatt to see what hotels they have in Turkey.
Ran into dead end. Sorry.

http://chipguide.themogh.org/cg_casino_search.php?keywords=Emperyal&search=Search