According to Vastu, the shoe rack should be placed in the south or west direction of the house. It is recommended to avoid placing it in the northeast or center of the house, as it may create an imbalance in energy flow. Additionally, the shoe rack should be kept clean and organized, and shoes should be placed neatly and not cluttered. By following these Vastu guidelines, it is believed that you can maintain a positive flow of energy in your home.