We have a bathtub with a shower head and rarely take baths. You don't leave a ring around the tub from a shower. The tub needs a good going over once a week even still. I use magic sponges - they work really well.
I use a little bleach (a capfull) in the loo every few days and scrub it with my loo brush inside and mop with a dedicated loo sponge on the outside, lid back and front, etc. The DCs who still live here (DS and DD4) are toilet trained and will also use the loo brush if they pebble dash it a bit. I read all the DCs the riot act a few years ago on this score and the lesson has not been forgotten it seems.
I do the sink pretty much every day however, as it gets gross. People are not very scrupulous about rinsing out the sink after brushing teeth.
The floor gets washed once a week, and swept almost daily as it attracts a lot of hair. It's white tiles, like MrsJayy's. The completely black cat likes to stretch out on the floor, and does a lot of her scratching and general grooming there. So the clumps of black fur gather into little tumbleweeds if I don't stay on top of it.
In summer I spray the tiles around the tub/shower with diluted bleach every few days and keep the mould at bay - we have a humid summer climate here.
I empty the little bathroom bin every few days too.
I have hard water here too. It affects the laundry and the dishwasher as well as the bathroom.
I'm a single mother so it's down to me.