Final Clean and Adjustment

What happens here

Perform a final clean-up of the tiled niche area using a damp sponge to remove any last traces of thin-set mortar from the tile surfaces and ensure all grout lines are clear. Conclude with any last-minute manual adjustments to the tiles, ensuring they are perfectly positioned before the thin-set sets permanently. This final check guarantees a pristine surface for grouting.

Goal: Ensure final cleanliness and perfect tile alignment.