I was playing Tera and found Akasha's hideout.
these are the directions!!
Akasha's Hideout Teleportal is located in Fyrmount.
From Castanica, use the teleport master Nelini to teleport North to Firebase Valor. Then travel south-east to reach the Teleportal. The teleportal is inside a little cave. Or you can purchase a Akasha's Hideout Teleport Scroll from any Specialty Store vendor.