Bathroom floor plan design - How to place the windows?

Hello everyone,
we are currently working on the bathroom floor plan and are looking forward to your opinions.
The bathroom measures 4.20 m by 3.30 m and is located in the NW corner of the house. The door placement is fixed, as the staircase is located along the rest of the wall. The placement of the windows is still open.
It is important to us to have a walk-in shower without a door and a 1.60 m wide washbasin (2x washbasins each 50 cm, with 20 cm in between and 20 cm on each side of the washbasins). A somewhat hidden toilet behind a half-height wall would be nice. The bathtub does not need to be anything special. (The washing machine will go in the utility room on the ground floor.) There should still be room for a radiator / some storage space somewhere.
In the attachment you will find our two favorites. What do you think? How should the windows be placed? Do you have any completely different ideas?
Thank you and best regards

Hmm ... full storey, so without a sloping roof? And where would you place windows?

Yes, exactly full story, so no sloping roof. We have considered putting a window on the north side and one on the west side. Window size/dimensions, whether regular glass or textured glass, and whether it should be openable or fixed element are all still unclear... Possibly we also want to add a fixed glass element in the interior wall/to the stairwell. That way there is more light and it is an eye-catcher ;-). (1.75 m above the floor, 1.50 m wide and 0.40 m high)

I would probably arrange it in a classic way or with an L. Where is the wastewater pipe planned, or is that still open? In which planning phase are you?

Don't understand right now: What is this slope supposed to be in the 2nd draft?

... probably a corner bathtub ;), which would normally protrude a bit further into the room.