Are private bathrooms a thing in shared houses?

Hi everyone,

I'm going to Japan with WH visa in a few months and looking for an accommodation. I'd be based in Tokyo.

I can find rooms with bathroom and kitchen shared for cheap but it can be pretty dirty/dodgy (depending on your housemates) or studio with everything included but of course way more expensive. Is there a middle point where you can rent a room with a private bathroom and just share the kitchen for a middle price?
What should I be looking for of that's exists?

Thanks!