Thank you for this great project, I have attached the design that I made, I tried to make the building size according to the last size you made with paper, But because it took too long to consider the complicated staircase area, I failed to complete some of the details you needed, I apologize for this, because there was a little confusion in the staircase area, but I tried to adjust it, only the staircase area had quite complicated work, because I had to dismantle the existing bathroom, but this was very possible, so that the design was in accordance with the instructions you gave, here is a brief explanation of my project:
Ground floor:
On this ground floor, as you wish, there is an elegant door, and stairs with statues around it, I made the stairs bigger than before, on this floor there is a kitchen and living room.
First floor:
On this first floor, I decided to widen the stairs which will result in the loss of the bathroom on the first floor, there is a cinema room and a work room.
Second floor:
On this second floor, I decided to widen the stairs which will result in part of the bathroom being destroyed, on the second floor, there is a master bedroom, a small bedroom, and a dressing room.
I hope the design that I submitted is in accordance with what you want, thank you