Could you describe the significance of the Chavadi and Sai Baba's routine associated with it?

The Chavadi held great significance as it was one of the two places where Sai Baba would rest. As a rule, Baba slept at the Chavadi every other day, alternating with a night spent in the Masjid. Chapter 37 explains that this sequence continued without interruption until His Samadhi. The importance of the Chavadi grew even more from December 10th, 1910, when formal worship, bhajan, and adoration of Sai began to take place there. On the nights Baba was scheduled to go to the Chavadi, a bhajan group would first gather at the Masjid, marking the start of the celebration.