Bathroom Size - 2 Floor Plan Options, Costs

I have 2 floor plan options for the bathroom (each bringing different limitations in the house again, but that is not the topic here). One option is "small" and one is 40 cm wider, "large." Does anyone have a comparable size? How do you manage with it? Is the larger bathroom simply more expensive and requires more cleaning effort, or does it provide significantly more comfort? Thanks.

Where is the window? Is the bathroom located under the sloping roof? Where would the 2m line be then? If that is the green dashed line, the entrance to the shower in the smaller version would regularly be associated with headaches if you stroll there in the morning trance.

There are 2 windows, both skylights, one by the shower and one by the bathtub. The sloping roof starts at 1.70 m.

The sloping roof starts at 1.70 m.

With such a high knee wall, I would also install a window there. Where is the 2m line?

I have 2 roof windows. I don't want a window in the wall, because you always have to darken it or put up privacy screens. What do you mean by the 2 m line?

The 2m line indicates from where under the sloping roof a clear height of 2m is achieved.