We just renovated a kids' bath and used ceramic basket weave tile with a darker grout. I like the look and it is very non-slip and easy to keep clean.

sheet marmoleum

no grout lines and non slippery surface

easy to clean

Planning a renovation of a moderate-sized bathroom that is mainly used by kids. What sort of tile flooring is best -- big tiles (so less grout to clean), or penny-square tiles with not-white grout? My kids are still really young, so I'd love to hear what has worked well for families as kids are growing up.