Hi I have attached photos of a project we are working on where the bathroom was very small. Behind the shower was a linen closet which we gutted and made room for a corner shower instead. We moved the vanity to the same side as the toilet and shower leaving a good size space when you walk in the door and to be able to have room to get dressed etc. we only needed to do a little plumbing work and some electrical otherwise we utilised what the owner had. Including spraying a beige spa bath they had in storage white to save money for them, The room looks big and bright compared to the previous layout. We relocated the linen closet to the opposite wall and utilised an empty space in the lounge room to build a new closet. Which was double the size. All in all we have this family some much needed space. Not sure if you can scroll through to my profile there are step by step photos to show what we did. Also we found some great discounts on tiles and other bathroom items.

Hi Siruskey (just found the thank you button) Nothing is in place - it is conversion of a small bedroom. The WC was placed where it is - and was partitioned off as you have drawn, in an earlier version... decided against it on natural light grounds. i like it tucked behind the door - the bathroom will be first room coming down the hallway from the front door. The link is exactly the type of bath I am thinking of I think i would try for something like 1500 x 750 size In the house design, there is a completely separate, attached to the house, outside loo / powder room, to be the go to loo for the garage band members /outdoor gatherings / during days working out in the garden and anyone seeking maximum privacy ! Keeping the shower behind the vanity - all tiles - no glass is appealing (not a fan of squeegeeing) 1200 seems deep enough? As long as 750 gap beween bath and shower is enough to move through easily enough. The bedroom in the old house has been lived in for 20 years and the bed has always been in the wrong place. The bulk head shown above where the two new small windows are, is where the old built in wardrobe will be removed. I have never been able to put the bed on this 4th wall - have tried it on all of the 3 other walls and it was always "wrong" - not sure if it was feng shui or not. The bulkhead is to manage the symmetry of the ceiling that has a deco ceiling rectangular panel. Partly my motive to take space from the bathroom for the BIR is to preserve the symmetry. I am trying out the 4th wall as location for bed, as the wardrobe is now storage with temporary curtains other than doors. It has the "right" feel about it. The ceiling panel is longer parallel to the window - so for a BIR taking off the "length" of the room feels better, than from the width, even though measurements are similar. What amazes me is how everything in design & planning process is connected to everything else... Fresh eyes from you (and oklouise) has been invaluable to sort out my head. .. and I appreciated your understanding of the J&J principle for the upstairs bathroom.. I think I will stick with it :)

Regarding ensuite, great idea to put a nib wall, or i could even put a 1.1m wall there and avoid the shower glass all together. Or may be put a nib wall between vanity and toilet?

1200 x 900 is a generous shower for a kids bathroom (1200 x 2350 is GIANT sized for a luxury master suite) and the leftover space provides a dry floor area to stand and towel off as well as wall space for towel rails ... there should be plenty of space for a built in bath and shower with easy access from inside the shower to reach a towel and why not include a generous linen cupboard as well