the problem with rearranging the fixtures is that none of the alternatives leaves enough walking space except the last, which is the same as what you have already first try an automatic door closer and consider a custom vanity with a small drop in sink in a counter that has a narrow section that continues across the top of the toilet and a wall mirror or mirrored medicine cabinet the maximum width of available wall under the windows...widening the counter will be useful and the mirrors and gorgeous new tiles, bath and vanity will help to distract from the view of the toilet

These drawings are not to scale so may not work, but this is what I would be striving for if it were my house. Retain the 3-way bathroom but move the shower to a lovely large open shower and add a toilet opening off the laundry. It reduces the laundry size, but I would rather a second toilet over a larger laundry any day. And this shouldn't be a hideously expensive remodel as it leaves much of the existing in place. The biggest issue would be plumbing for the new toilet. You could eliminate the basin in the second toilet if you designed the laundry so that the wash tub doubles as a hand basin. I've seen that done in ways that are quite attractive. (Apologies for the rather rough drawings).

You’re correct of course. We have short and long time plans but just want to make it liveable in the short term doing what we can within the existing footprint. The house was purchased to be a laid back beachside hangout, however my daughter in law may get a new job in the town so she and my son may move in there. The building is an ex milkbar on a triangular shaped allotment subdivided from the main house made of brick and rendered brick. The rear room and storage area are concrete block construction. The whole building is on a concrete slab so we plan to polish the concrete throughout accept for existing carpet in bedroom and current lounge. Maybe some tiles in the bathroom. The eastern boundary can’t be altered as that is the sideway access so the odd shapes on that side need to stay as is. There is a driveway in front of the carport and storage area. There’s asbestos sheet on the eastern wall of the carport concreted into the ground so that needs to be safely dealt with before any change there. The western wall of the carport is attached to the main house and is the title boundary. So any construction there will require a second wall. We have secured a fabulous second hand kitchen for $900 (with many more cabinets than we need so have lots of options including for a vanity) which includes a Miele dishwasher, Blanco sink and quality cooktop, oven and granite bench tops. The bench top includes a piece that can be easily trimmed for the odd angled corner in the back room. After swapping the kitchen and bathroom positions as proposed in my draft plan, we figure then it can be lived in while the next phase is built outside. We propose to build a new room that would be a dining room adjacent to the triangle shaped kitchen. (Will remove the wall in between to complete) Between the new room and the carport we would add in a laundry and second toilet (or ensuite if we go for a third bedroom) If we decide we need a third bedroom we could convert the carport for that purpose. Given the property is only a 5 minute walk from the beach a second shower maybe best placed in the rear garden. We have also thought we may love a bathtub/spa to soak in the warm north facing courtyard so therefore don’t need one inside. There’s water and sewer waste points outside the existing toilet and where the current vanity and laundry sink along the angled eastern wall. There’s also water and waste points in the carport adjacent to the current kitchen and in the storage area adjacent to the current shower. There’s gas in the carport connecting to the current stove and the heater in the current lounge.

the narrowest walking space would be about 60cms (and there won't be a lot of traffic in the space and with 3800 (not 3400) the ens doorway can be pushed towards the front of the house, not centred and makes more standing room in front of the shower and easier access from the bedroom to the ens but also depends on the distance from the new wall to the side of the bay opening and that was probably centred when the house was built and before the wardrobe was installed so you need to carefully measure the room again... we now have three different widths for the room and the hall is shown as metres wide!!...is the master bedroom 3400 or 3800 or 4460 wide (ignoring the bay window) and what is the length of the whole room (ignoring the wardrobe) and what is the depth of the wardrobe from the outside and also measure from the outside of the architrave around the bedroom door to the front of the wardrobe ..could you gain some space by moving the bedroom door closer to the wardrobe and/or hinging the door to open towards the wardrobe to feel less cramped? ...we can make lots of suggestions but need to start with precise information about what you already have and based on new information and the size of an average king sized bed and the wider room my suggestion would be to place the bed in the centre of the room, lined up with the centre of the bay window and then measure how much space is available on either side for the ens and for wardrobe and bedroom door and you'll probably find that even if the bedroom door is moved there would probably be about 60-70cms between the bed and the new wall and minimal space between the bed and the door on the other side so try losing big bedside tables and use hanging lamps and mismatched side table or shelves ( a cut down stool makes a tiny side table) and keep in mind that, unless you remove the whole chimney (big job but will supply a huge number of bricks if you need some paving) the thickness of the brick walls will decide how much space is available in the chimney alcove for the vanity so measure inside the chimney not outside wall spaces but, despite limitations imo the ens is well worth the effort, cost for the improved resale value and quality of family life.. but, why not move the bed and add something to create a barrier to represent the proposed ens wall and see how it feels as something like this could work but depends on accurate measurements