Looking at your current plan. No there is no room for a WIR. My suggestion is to install another set of built in robes.
My initial thought was to move your master bedroom door to the very right of bedroom wall, and have the whole corner for your built in robes, but looking at the whole plan this is not possible, due to the change in floor height, when entering dining kitchen area.

Also looking at your plan, it appears that your bed may not be too scale. If a standard bed is 2000mm length, this is already more than half your room measurements, but does not appear like that, in your computer drawing.

Thanks for that feedback @dreamer and for the pickup on the bed! I hadn't realised the bed was then wrong size.

is this a renovation of existing rooms? if so is this this the best location for the master suite? could other rooms be rearranged...is there enough space to use the master suite and bed 2 for two small bedrooms and a lounge and make the new master suite and small study out of the the lounge and bed 1..what are the dimensions of all the rooms including bathroom and laundry.

@oklouise, I would have loved to reconfigure the whole thing. But Bed1, Bed2 and Rumpus are existing and the space is intended to be for our 2 kids so they have their own area. We're also trying not to demolish or reconfigure those spaces if possible to help keep costs down.

Nice one

Love okl work. You could fit more towel rails by double framing the wall with the sliding door to allow a towel rail to be fitted or by changing to an outward swinging door that opens back to the wardrobe end wall.

@oklouise, you are amazing! Thank you for taking the time to draw up those ideas. It's great to see them like that and even better to see that a WIR is possible (albeit at the risk of minimising bedroom space). Is 1300 the standard distance in front of hanging clothes? Could that be narrowed a bit?

the walking space could be as little as 90cm for comfort but making the WIW smaller reduces the wall and storage space by 40cms, adds 10cms to the bedroom but does allow for a 1200 wide shower, super generous vanity and more floor space in the ens but depends on what's the most important for you and note that the door into the wiw is overlapped by the bedroom door so you would have to keep the bedroom door closed or have a narrower opening at 720 wide between wiw and bedroom..but this option could be the best compromise if you use bedside and extra drawers to make up the lost storage from the wiw

something else to consider with the current master space,with
his and her robes

And the following, because space is critical I have thought that the small court on the western boundary off the kitchen could be included into the floorplan just using high windows?

As OKL has previously mentioned possibly relocating the master suite which you responded that you were understandably wanting to keep costs down. It's still vital for you to get the best possible floorplan so that things flow.

Without most dimensions my suggestion of a possible floorplan

Changing the end bedroom and Rumpus rooms into a master suite, the kids bedrooms side by side and the rumpus off the bedrooms, The study opening off the kitchen family so you can over see them using computers and doing home work, plus its a lovely space to do anything that you would normally do on your computer.

I also like the idea of seeing the fireplace when coming down into the house.so I would personally prefer keeping to to the left of the room which could help with better furniture layout

this with more detail and a few changes, ie: doors in family adding a single door

I would love to know if the space that I have marked is the original layout and all on the same level with the kitchen dining family the only extension, this would not allow for my suggested new study. How many original rooms make up the Bed 2 and Planned Master. I looked back over all 5 of your posts to try and get a better perspective of your house as a whole, thanks

continuing on from dreamers suggestion of adding another wardrobe, I would also move the entrance into the ensuite away from the bed head end, laying in bed and looking into the bathroom isn't the best view, Moving the doorway also means re arranging the bathroom.

Now bedroom drawn to scale allowing 100 for walls, no other dimensions except for the kitchen dining living supplied so a bit of artistic licence used

I think your instinct is correct in that you just do not have the sq footage to accomodate a walk-in robe. The only change I would make to your plan is having the built-in robe extend the entire width of the room and place it on the same wall as the door.. I've lived in homes where the robe abutts the door and it's absolutely fine. You don't notice any intrusion from it. For me, I don't think it's a great idea to have clothes hanging adjacent to the bathroom.

Bathrooms are wet area's. No matter how well ventilated they do introduce damp into a room, which is why the chinese don't believe in having ensuites. Too much water in the bedroom. It's not just supersitition there are good practical reasons for it. Nothing is worse than having a mould problem in your robe due to the proximity of a wet room. Mould ruins clothing and shoes alike.

Chinese like most Asian countries have high humidity to deal with, we had ensuites and wardrobes in the bedroom that backed onto the bathrooms for ease of use, even when we had airconditioning. The important thing to remember is ventilation, IE: opening windows in both ensuite and WIR for natural light and ventilation along with extraction fans in the ensuite

Actually the majority of China is in a temperate to cold zone. Only one tiny part of it sits in a high humidity area. Just sayin...

Yes you are right but overall Asia is hot and humid and has a shorter pleasant cooler season