I present to you my interior design project for your home. The interior is in a modern style with harmonious colors and it is pleasant to stay in this space.
On the floor plan, I have shown the possibility of placing sliding or accordion doors between the kitchen and the living room, but I advise you to leave it to one common room because you get the impression that the space is larger. By installing a door, you would get two small rooms, which does not look representative of your apartment.
In the hallway there is a large closet and a desk.
Another tip. The old furniture that you planned to keep would not fit in with the modern style that you requested, so I did not use it in my interior design project.
Thank you for the opportunity and I wish you all the best.