good one. the last soft carpet can be complement.
there is any design of bookcase maybe you like. it is circle type. yes it is need more effort to arrange book, because not all size book can save here. but it is cool enough for your modern home library design ideas. beside it useful as bookcase, you can put in living room or family room as decoration.
other ideas is put some colored furniture. make sure to put furniture which have quite color. apple green is the best one. this color make you feel calm, it will be great when you need it for study. other color can be applied here; if 