To be honest, all hikes in Krabi are amazing. This one too and it isn't too long, just 2 hours up, a bit less to go down. Views are breathtaking, it's my favorite area in Thailand.
This is one our favorite hikes. You start off going through a fairytale-like forest with ferns covering the ground and moss on boulders under trees and then it opens up to the point and a sheer drop with an amazing view of the whole valley.