- The Concierge of Istanbul Customer Service: +90-212-258-9125 Fax: +90-212-261-6633 E-mail Reservations: concierge@concierge-of-istanbul.com Traveling to Turkey You are at the right place to arrange your guided travel services, reserve your hotel room, arrange your airport transportation, and charter your Blue Voyage Yacht. Our mission is to make your stay in Turkey a wonderful one! When you are ...www.concierge-of-istanbul.com