Layout question: Replace straight staircase with L-shaped staircase

Is this baby already here, because the entire floor plan is supposed to be rearranged for it? Either way, I would seriously reconsider whether I would turn the whole house layout upside down just because of a phase that only lasts a short time. Babies are very individual; who knows if the constellation "we are in the living room, the baby is sleeping upstairs" even applies to you? There are many babies who are very clingy. And then there are ours, who don't care about anything and just want to sleep in peace. With both types, you actually don't have to run back and forth all the time. If they really are still at an age where you have to constantly fuss over them — mind you, mine is now 4 months old and this phase is already over — then you usually have them with you all the time anyway, because anything else hardly makes sense. Long story short: anticipating baby behavior and needs is almost impossible. The high maintenance phase lasts less long than you think.

You are absolutely right. I might be a bit marked by my first child in this regard. But of course, every child is different and none of this can be planned.

The question was merely whether an L-shaped staircase is possible given the width of the hallway. For that, the complete floor plan is not necessary.

The answer has been available since at the latest ;)

Hmm..
1. if you want short distances to the child, you could park it in the guest room at first. Isn’t it in the bedroom anyway for the first half year?
2. About the stairs/hallway:
Do you want to widen a hallway? I thought you meant the faster access to the dressing room from the stairs?!
If you make the stairs turn at the top, the way to the children's room would be longer: then you basically go around the stairs.
And even as I write this, I don’t see any problems at all. After all, you don’t have a 300sqm villa, but apparently a house of normal size where you can somehow see everything from diagonally bottom left to diagonally top right. And if you think you don’t, then use a baby monitor. It won’t harm the child if the parent takes 32 seconds instead of 3.2 to get to the baby bed.
By the way (I know you don’t want to hear it): don’t plan a bathroom above the living, dining, or kitchen area if you can instead use short distances and plan the bathrooms one above the other. You don’t want water or sewage damage in the open-plan area.

You are absolutely right. Maybe I am a bit biased with my first child. But of course, every child is different and none of it can be planned.

Well, if you already have one, you at least have a guideline of where the journey might go, but it doesn't have to. ;) Our two, at least in the first months of life – contrary to all prophecies – have very similar behavior patterns. Let's see how things continue.

The answer has been available since at the latest ;)

Well, not really
It says it will be tight and won't look nice. Does tight mean it will work, or it won't?
I had hoped there was someone here who knows a bit about stairs and can tell me whether it is technically feasible based on the stair rise and the width of the hallway.

Your hallway is 213 cm ... L-staircases can also be made "only" the width of the stairs on the starting side, but then it must be planned precisely. Still, only about 100-110 cm remain for the entrance door. And the dirt area at the entrance is directly in front of the staircase.

The standard L-staircase usually has 125 cm on the short L-leg ... then you have less than 90 cm left for the front door.

And the 213 cm, which I probably read as the hallway width, is also a rough construction measurement. So it will be somewhat narrower.

You are not providing the complete floor plan, so no other options can be reviewed.

I also see the planned 2-3 steps ceiling overlap as critical. The floor-to-ceiling height would have to be known.