Site plan design for new single-family house, narrow plot, architect's initial draft

Here is the ground floor quickly.

Cool, thanks for the draft. We have a few questions about it. From the entrance, you go directly into the cloakroom, right? Yes. Then comes the guest WC Yes with shower and what is the niche afterwards meant for? As a guest cloakroom? Storage room

What kind of staircase did you have in mind there
2 times quarter turn.
and how many square meters would that be approximately for the utility room?
8m2

The kitchen island should then be very long and directly connected to the dining table? Not necessarily, just an idea.

And what is the beam on the sofa?

Backrest. Any other sofa would work there too. What do you have on hand?

Looking forward to explanations.