You can reach this place via the Arc de pillar World. Follow the old way to reach the Desert Pier, but, when you reach the Mansion, you need go up the stairs and you will see this NPC, interact with it and you will reach the Desert Pier.
You can reach this place via the Arc de pillar World. Follow the old way to reach the Desert Pier, but, when you reach the Mansion, you need go up the stairs and you will see this NPC, interact with it and you will reach the Desert Pier.