I would consider placing the toilet in its own enclosure as you walk in, where the toilet is shown, with a cavity slider on the right into what would be bathroom space. I would centre the vanity in between two nib walls on the far right wall, with the bath under the window as is, but built into a nice size hob, that is highlighted with floating timber shelves on the end wall, so flanking the vanity nib wall, and the shower tucked into the other side, so that the nib wall say 450 would enclose one end of the shower, with a standard door and return screen finishing it off. It gives you plenty of opportunity to use this back wall as a feature in colour or texture, clever tiles or glass, even mirror, and an open wall as you enter to your right for towel rails etc.. Your vanity is at best proximity to access for guests, and the toilet is private. Perhaps you could clad the bath surround in a timber look tile, and have floating timber shelves on the back wall for decorative items or luxury bathroom things like plush towels, scented candles etc for a retreat feel, backs the wall with mirror for added dimension and ambience, and continue a bulkhead up and over the bath with some down lights to really showcase the bath as a focus under that window.

Hi Paul In apartments, the killer for layout changes are always drains, then water supply, then load bearing walls. Before you consider doing any changes to the layout, I would advise you to locate the drains (pics would be good) as they will likely restrict you. The drains are important for obvious reasons but also important is the fall (ie downward slope) of any drain you wish to install in a separate location. It means you have to take into account more height the further away from the existing drain you go. It is likely that your existing laundry trough/basin has a drain going down to the floor, and this is going to interfere with the proposed ensuite entry location. Ditto if it is going into the wall. The big one is the new shower. It will need to have a 50mm waste (drain) in the centre of where your washing machine now is.... and the question is where is it going to go.... I would suggest swapping the vanity and shower over to access the existing trough waste if it is large enough. In a lot of these older apartment buildings, the waste sizes are down at 38mm, which is not going to drain fast enough for a shower. If your existing waste is that size, you will need to have a hob to the shower as it will fill up, and you will also need to check health regs to see if it is allowed in your state. To get the drain for the new ensuite vanity and new laundrette sorted, I would punch through the new kitchen wall and run drainage along the wall behind the new cupboards and around to the existing kitchen sink waste. This will give you plenty of fall and a place to hide the pipes. For the new basin to the existing, you will need to see if you can get it around to the existing basin waste in the bathroom adjacent by running it around and under the bath. Cheers

is this a plan for a new building or a renovation of an existing bathroom and are the doors and windows fixed, what is the depth of the vanity and distance from the corners to the doors and windows? but, based on assumed extra dimensions, my suggestions would be to rotate the bath and have a simple shower cubicle with hinged door as a walk in shower would be difficult to avoid a wet floor without more space but there's extra room for a longer vanity and more elbow room for the toilet that's tucked more out of the way next to the vanity

your plans and 3D looks excellent and i think it's a fabulous idea and great use of the space..we once had a bath space that was only 1200 x 600 built under a sloping roof with side access only 700 wide... the space was walled and tiled without a tub. (including tiles up the sloping ceiling)..worked perfectly but you have the luxury of enough space to add a bathtub that will be so much more comfortable and easier to clean and a standard drop in bath with the straight end at the front and layback at the far end ..standard installation just rotated with a nice low lip on the bath to make a flat ledge to line up your bubble bath and ducks...challenge will be getting the bath into the space.. there and a lightweight (often cheaper) bath may be easier and/or the installers may have to make a hole in the wall for access from the other end or the side and then refinish the walls...there are plenty of bathtubs that would fit the space but you'll need to discuss best options with plumber and tiler as they don't usually like surprises and, if a custom vanity was under the stairs with the sink offsett to the high side and the toilet behind the door there would be more comfortable standing space in front of the bath, a bigger vanity with more storage and easy access for towel rails near the bath..but, regardless of the width of the actual toilet, it needs to be installed close to the door (not centred in the space) to allow enough shoulder room but that means the door needs to be closed for broad shouldered adults to use the toilet comfortably..but that's not such a bad idea and another option for extra light (even in a downstairs enclosed room) is a Solar Skylight mounted on the wall or ceiling..research illume and Arcol brands for more info)