Better to convert the 3.5 X 2.4 bedroom in to bathroom, your plumbing is next to it. Your study should remain where it is.

Image 1 with bigger kitchen. Looks quite good. Dining area is very generous at 6000mm, as is the laundry at 2500mm wide. Many laundry's are 1800 wide which is acceptable so 2500 is generous indeed. Good for ironing and clothes sorting. Cavity slider to pantry as it'll be open 99% of the time and look like 'no door'. Make study bigger by relocating the bedroom BIR to run along the hallway wall near the door. It'll make the bedroom smaller, say 3300 (600mm for BIR) but thats still quite good for a single bedroom. Also easier to furnish as it reduces circulation pathways across the bedroom. Also make entry area wider with the possibility of a wall to define the entry rather than entering directly into the living area. You'll need a place for coats, shoes, etc. even for guests to place down their items so a bench or a cupboard to hide everyday items is a worthy addition. Watch out for the tall windows as they diminish your furniture placement options. Privacy and energy efficiency comes into it as well. Views are important but its a combination of everything.

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 :)

Happily a lot of retailers now go to 3x4 metres-ish in their ranges. You still see a lot of the standard 1.6 x 2.3 which most people buy and which are too small for their rooms. I’d start with Miss Amara, Lost Design Society and Temple and Webster. Even Freedom and Coco Republic have bigger sizes. If you have the budget Cadrey, Hali and Armadillo are just lovely and can do custom. Or as suggested above a carpet store can arrange to have carpet edged and made into a rug - carpet width usually tops out at 3.1 metres so that would be your upper width. I’d also have a look on Etsy. I’ve not purchased a vintage or custom rug from their but have seen quite a few Australians that have.