Most of u have focused in waterproofing or porous issue. But hardness of tile is important too. Porcelain can receive/tahan higher impact than ceramic tiles. You may have something heavy fell onto ground and damage ceramic surface.

Also, most ceramic surfaces are polished and smooth. Pls choose a matte and non slippery tile for safety and easier maintenance.

Yup, peri-peri. Thanks for the correction.

If really want ceramic for floor, at least go for matte and non slippery tile. Anyway, my personal preference is porcelain tile.