Perdana Quay is located opposite / but within Telaga Habour, one of the many marinas in langkawi, located on the eastern side of Langkawi Main Island around Pantai Kok. There is a large Petronas Station, a Petroscience exhibition (close when I was there) a KFC (the KFC with the best View), and a May Bank here.
View toward the Habour Entrance
View towards Telaga Habour Main Buildings
Photos View of Telaga Habour from Perdana Quay