Phi Phi Viewpoint is the highest and best view of the island below. It takes around 15-20 minutes to get to the first viewpoint where there is a strange amount of fruit sculptures. But if you keep walking all the way to Viewpoint 3 you will get to the picturesque double bay panoramic view. There is a small fee to enter (cash only) and it changes depending on the season.
There is a bar at the top where you can purchase drinks n coconuts to cool off because trust me, you WILL be sweating buckets. Make sure to bring water before you start!! This view is great for sunrise and it does get crowded so going early is reccomended for the crowds and to beat the heat.