The Sanctuary in Wong Amat in Naklua Soi 12. Go past the entrance to The Sanctuary of Truth (on the right after about 750 metres) and continue on, turning 90degree right at Club Royal condo. Continue to the very end of the soi where the entrance to the new Centara Grand Modus is. Here you need to turn immediately right, past our guard house and left into the damp car park. The office is at the top of the slope. There is a map on the developer's website