Well, you:
By "cold area," I suppose a hallway is meant. By the way: You might want to inform yourselves again about the point of not heating rooms in an energy-saving regulation new build with (I assume) underfloor heating in order to save energy.
If the daughter is afraid of dark rooms, going down the hallway on the way to the children's room could be quite problematic, right? That’s apparently not a problem? I suppose, "it can’t be any other way there."
There's also a cat flap in the guest WC door? Awesome. Not only do you hear every little sound in the living room, now the cat also comes in uninvited during my throne time and sneaks off beside me. Cool.
Well, there’s no point in shaking the cornerstones here. It’s too late for that. It’s not a disaster now either. As long as you’re happy, we are too.
There is a big difference between our daughter being able to move freely and without fear during the day and being put to bed with company or her having great stress every time she needs to go to the toilet during the day or constantly needing accompaniment for that.
We are not building our house for visitors; anyone who wants to celebrate their throne time in peace can do so gladly one floor down.
I actually see the child's bedroom as unfortunately positioned. Possibly noise from the building services room and the utility room. Depending on how noise-sensitive your child is, pay attention to a good positioning of the devices in both rooms, so not on the shared wall. Would it be an option to swap the bathroom and the child's bedroom?
I would also be interested in the dining room furnishings. You mention a bench next to the French door. Where is the table then? Wouldn’t it be in the way when you want to go into the kitchen?
She finds noises she knows rather soothing.
I actually can’t imagine that the table in the kitchen is in the way. A corner bench is supposed to go in the corner, and the table then along it.
The right wing will be the first to open, not as shown in the picture.