Instead of turning the shower area into a linen closet, could a tub be tucked in there? You'd need to move the heating vent. And if that's the end of your vanity you'd need to shorten it. I agree with Darzy about the new shower location.

Or (again, assuming you want a tub) move the door to the toilet room so that it opens where the shower is now. Then put the tub along the wall where the toilet room door is now, and the shower beside it, with one side of the shower along the tub.

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Great ideas. I love the idea of turning the shower into a built-in cabinet. Also, should I keep the step on the tub? It sure does help when getting out, but is it too dated?

OK Partim, I understand what you're saying about moving the door and putting the tub along that wall. But what happens to that corner that is now the shower? What else can be done with it?

You'd open the door into that space. Your toilet area would be more spacious, because the door opens out.

But if you're not planning to have a separate shower and tub, then there's no point in moving that door because you really don't need the room.

I do want a separate shower and tub, and I like your ideas so much.

Yes, I would remove the step for a seamless walk-in shower.

This is the general idea.

Shape and size of the shower depends entirely on the space you have, likely needs to be smaller than I have drawn here. Hard to tell from your photo, and we don't know your dimensions, where the door is, etc.

You mention keeping costs down. Does that mean you can't move any of the plumbing? Also, where is the plumbing in your shower? If it is on the wall where your toilet is, you're a bit restricted. If however you can move plumbing, consider swapping out the toilet and shower. You can then use the space where the but is to make have a frames glass shower at the head of the tub. You can then make the shower larger and the toilet room smaller. Good luck.

If you use a drop in tub, you can extend the edging around the tub to form a bench in the shower. There are lots of examples of this in Houzz, usually with the shower at the foot of the tub rather than at the side.

Don't know what your budget is but just warning you that a big glass shower like this is not an inexpensive option.

Or switching the shower and tub, if that works better in your space, depending on how long the wall is and where the door to the room is.

Very cool everyone. that last drawing Partim looks like a possibility. So wonderful! Now I see the value in hiring an expert!

Hold off on buying your vanity until you have a complete final plan.

Well Partim, that ship has sailed. I think it'll be OK. I am seriously considering your fab idea of moving the toilet room door (I was thinking of just removing it entirely since it'll be around a corner) and using that wall for the shower and then run the tub along the right. You are a genius!

Step into the tub is old fashioned and slippery. Better to sit on the deck and swivel into/out of tub or step over the edge.

So glad you like the idea! Moving a door is often a help when a room has an awkward layout.