My advice after having busting out many Travertine floors is to consider Granite, Ceramic, Porcelain, or Glass for the bathroom home flooring. Use a durable non porous easy to clean material. You can use Travertine but remember it needs to be sealed. As a floor surface this can build up if not maintained properly. Like Marble, Travertine is a soft material and requires maintenance and can be stained, scratched, and easily chipped.