With the amount of space available, that really doesn't have to be the case, but a comfortable staircase should be part of the planning alongside the kitchen (location) exit.
We don't have such an extravagant amount of space, do we? Ground floor: Kitchen, dining, living, WC (with shower) Extras are study and pantry (these are not absolutely necessary) Upper floor: 2 children's rooms, bedroom, bathroom no extras The half-turn staircase currently measures 212 cm width x 230 cm depth. According to a calculation found online, this should result in a 27.1 cm tread and 17.4 cm riser with 17 risers, 270 cm clear height, and 295 cm from the top edge of the finished floor on the ground floor to the top edge of the finished floor on the upper floor.
Morning, once again: WHY DON'T YOU ASK SOMEONE EXPERT?
Because 98% of all houses are built without a designing architect. Because so far no architect's design, for example in BR Traumhäuser or as often posted, has convinced me. The designs are different but not better for me.