First of all I would like to say that it was my pleasure to participate in this project.
As you can see, i didn't change room's layout, I tried to make it a little bit brighter with changing color of bookshelf because it is too dark and it is closing the space of the room, making it smaller. Instead, I tried to follow your color pallete with warm brownish colors mixed together that make this space special. Also, I wanted to give a little sparkle with the color of the sofa that is pale blue and give dynamic to the space.
Hope you like it.
Kind regards.