Go towards the pool and then go to the left of the pool, go straight towards the diamond shape on the wall, turn right through the way and then left, and stop near the plant.
Head in towards the pool and turn left, to pass by the pool with the pool towards your right. Continue forward and take a dogleg to the right to enter an alcove with a door to your left and an other door to your right, both leading to a massage room.
Turn left, and pass the pool on your right. Keep walking forward, and then turn right towards the pool corner. Walk a bit, and turn left immediately. Stop in front of the big rectangular mirror.