INSTA -Συμβουλευτικές Υπηρεσίες - Main Component You are here: Home Projects ATHENS MARRIOTT HOTEL ATHENS MARRIOTT HOTEL ATHENS MARRIOTT HOTEL MEP DESIGN AND SUPERVISION FOR THE RENOVATION OF THE 5* HOTEL, 750 BED CAPACITY, AT SYGROU AVENUE IN ATHENS / CHANDRIS HOTELS AND INTEGRETION WITH MARRIOTT HOTELS COMPANY