Start with the room type
A bedroom and a home office need different furniture, lighting and flow. Naming the type does most of the work before you add a style.
What stays and what moves
Walls, windows and proportions stay fixed. Furniture, materials, colour and lighting are open, which is what a redesign actually means.
One room, several directions
Generate four versions before you commit to anything physical. That is cheaper than one wrong sofa.
FAQ
How is this different from interior design?
Same engine, narrower question. This page starts from the room type, the other from a style.
Can it empty the room first?
Yes. Ask to remove existing furniture and keep the architecture.
Will it respect my window light?
It uses the light in your photo as a starting point. To change it, use the relight tool afterwards.