ensuite is very small by today's average (some of the first ensuites were 2.4 x .8) but careful choice of fixtures will maximise available space eg semi recessed small vanity basin in custom made counter, wall hung toilet with concealed cistern, wall hung vanity and in wall mirror doored medicine cabinet, walk in shower, small scale taps, in wall pipes for shower (no exposed pipes) I can't suggest a better arrangement for the bathroom, laundry and ensuite in the available space and i like the shelf across the end of the bath and the absence of an external laundry door but what about a bench across the laundry window and what alternates floorplans do you have?

It's small, but I guess it would be workable as long as only one person uses it at any single time. And if you're not too fussed about acoustic and visual privacy.

But, with the available space, instead of having a small ensuite and bathroom, I would be tempted to instead create a more functional three-way bathroom with a separate shower / bath "room", a separate "toilet" and a separate vanity area with double sinks. You should be able to squeeze in a powder room as well - if you need a second toilet and there isn't already a powder room elsewhere in the house.

It's about as narrow as you'd want it at 1170.

You'll need mechanical ventilation.

A skylight if possible, will make it feel bigger.

Is a towel rail necessary; not much room for one.

A standard vanity perhaps may allow wall space for a towel rail.

Hi

I think in reality and once it is completed it will be a little too small. Often plans don't show that.

A square semi recessed basin as you have shown will be around 400mm deep, plus a bit of cabinetry to the rear say another 50mm. That leaves your main walkway and access to the toilet/shower reduced to 650mm.

The shower screen will also need to be around 600mm long to be effective for water containment and that leaves an opening of only 500mm to get in and out which is too small. We have done smaller screens as you can see below but the fall needs to be spot on with the tiles.

You can overcome the small walkway by making it an open ie visible to the room ensuite and access is easier.

This is one we did many years ago as one of our first reno's.

Cheers

We had an ensuite 1m x 3m. It worked. It was a 1-person at a time room and the door was rarely closed, we too had a cavity slider. It was purely utilitarian type of room- it served a purpose. It wasn't a spa suite. I still loved the space it gave me away from the kids.

rough it out with cardboard boxes in another room - try sitting in a chair, trying to reach t-paper etc (elbows not hitting walls etc.) Its still better to have a toilet and sink of your own if you have to dice the shower - but I think it will work out fine as you have it

Any chance of a window that would make a very big difference, toilet at that end, shower the other with what ever vanity fits in between and a cavity door makes for a great ensuite