What is the family of brands with a hotel in Istanbul Old City that operates in 52 countries?
Crowne Plaza:  It forms part of the InterContinental Hotels Group family of brands, which include InterContinental Hotels & Resorts and Holiday Inn Hotels & Resorts, and operates in 52 countries with more than 400 hotels, usually located in city centers, resorts, coastal towns or near major airports.
i don't know