How did you progress to find it, Ive been and talking to all the people, and been all around calbridge but cannot find the house hiroku that i need to follow? confused. 

You need to talk with all 6 people that give hints about it, in some cases while Mira and Mirel are in your group, and the festival of Thremten with Mira and Mirel needs to be done. Once all conditions are set, you need to find the right spot in the top right corner and interact with it. It doesn't auto-trigger like other teleport spots.