What are the best materials and designs for bathtub tiles to ensure durability and aesthetic appeal in a bathroom renovation project?

For durability and aesthetic appeal in a bathroom renovation project, the best materials for bathtub tiles are porcelain, ceramic, or natural stone like marble or travertine. Designs that are classic and timeless, such as subway tiles or mosaic patterns, are popular choices. Make sure to use high-quality grout and sealant to prevent water damage and maintain the tiles' appearance over time.