You could do a wet room on the south end of the room with the tub and shower combined to conserve space. Window would go above tub, however with privacy in mind it would not be low as you have in your cad drawing. see photo. Vanities would go on the west wall with toilet on the east wall. I am guessing at the dimensions because you mention meters and in the US we use feet, but it sounds like about 9'x15" ? The location of the entry door really impacts the layout of the room, but it looks like it cannot be moved.

You could reverse the layout of the ensuite, and have the door to it through the walk in wardrobe (so you would only have one door coming off the bedroom). If I were you, I'd consider swapping the positions of the ensuite and wardrobe, so the current ensuite door becomes the wardrobe door. That way you could move the bed to the east (right), and you would have room for a seating area in the north west corner of the room (as your bedroom looks huge!). I'd also add a window on the small bit of north facing wall in that room; you already have corner windows in the living and another bedroom, so you could match those in style. Personally I don't particularly like the current layout of the main bathroom, although I can see the reasoning behind it (i.e. vanity at entrance, toilet hidden behind wall, window above bath). I think it might work better if you put the shower in the corner where the bath currently is (i.e. beside the toilet, opening to the west), and the bath on the same wall as the vanity. You'd have to move the window, of course. Alternatively, do you actually need three toilets? You could remove the toilet in the main bathroom, and you'd have room for a freestanding bath and/or a bigger shower. You could consider stealing a bit of space from the kitchen to create some storage at the entryway. I'm not sure where your garage will be, but it's really handy to have a designated place at the point of entry for all the stuff you tend to dump when you first come into the house (schoolbags, coats, mail etc). Overall, I think the layout is pretty good, but you could potentially lower the build cost by making it all a bit smaller. It's really worthwhile taking the time to figure out just how much space you actually need, and where you need it. For example, if it were my house, I'd take about half a metre off both the east bedrooms (so the house is shorter from east to west), plus I'd make it smaller north to south by slightly reducing the size of all three bedrooms, and making the kitchen a bit smaller (so the hall cupboard lines up with the back wall of the small living room). But your priorities may be completely different from mine!

I had a few companies competing for my business. I went with the guy who was obviously doing his homework, color matching, great price, he found the supplier who had granite from quarry where the counters in my new home came from. Wow is all I can say. When I told the competitor that I was letting her go, she asked why and I gave her the reasons above. She said she'd do it all for the same price. She had done my friend's sister's bathroom and it looked fabulous, I had not actually seen any of his work I saw pictures, but this was an actual project I saw, so I agreed.The project was to put cabinets and a counter top, that matched the ones I had on the other wall.What happened.The got the wrong style, wrong color, wrong size.I decided the color was a shade off... fine... its not that noticeable. The width of the trim of my shaker cabinets were about 2 1/4 inches, her cabinets were 3 inches.She got two 24in cabinets instead of two 36 in cabinets. She brought 2 sliders for my existing cabinets when she needed to bring 4. I was supposed to have 1 large drawer above each cabinet, instead I got 2 smaller ones. The granite was a crappy match. She promised to include 2 outlets above the backsplash. She wanted to charge extra last minute to do one because it was "more complicated than she thought." I had an electrician do it for $40.I feel like I let so much slide. I just wanted it done. I didn't have enough cabinet space. I wanted to finish putting all my things away. My saved spot with the other guy was lost and I'd have to wait until Dec. (It was the 1st week of Oct.) She said it would be 4-5 weeks to complete.Its 12/5. My cabinets are damaged. She splintered the wood when she applied the drawer pulls, she used the wood marker to "fix" bit it still looks crappy. And she wanted the last installment.I told her she can have 1/2 of the last payment, she said she'd come back tomorrow to fix. I was at work on the phone with her. My wife hands her the check, she takes it and says, you know, tomorrow is just not gonna work out. What other day works for you.My wife tells her Monday. She says ok and leaves.I feel like she's never going to be able to fix all. And I have no idea what to do from here.

Your client putting trust in you was the right decision! amazing transformations! Love the natural light in particular as thats a great spot for a post gym pump flex for a good selfie!