To book a spa package at Tattva Spa in Chennai, visit their official website or contact the Chennai branch directly. Browse their spa packages, select one that suits your preferences, check availability, and make a reservation either online or by calling them. Provide your preferred date, time, and package details. Ensure you receive a confirmation for your booking. On the appointed day, arrive on time to enjoy your spa experience. Specific booking methods may vary, so consult the website or contact the spa for the most accurate and current information.