Having spent weeks in countries with a single common wet bathroom, a separated wet and dry zone is much more friendly to use, but also less easy to clean.

If your bidet is just a hose attached to the toilet instead of a washelet, there's something to be said for it, but I still don't enjoy the single common wet zone.

A split zone design that separates the wet zone (like the shower or the tub) from the dry zone (toilet plus sink) is nice.