Another idea would be to draw the floorplan in scale on a piece of paper. Draw basic furniture on another paper and cut them out. Play with the furniture to see what could work for your family. Imagine yourself walking around in it (about 90cm wide walkways) and doing your daily business (hobbies and such). Also think about the sun shining in. And meanwhile create some ideabooks on here with styles and interiors you like. Use as many searchword combinations as you can come up with. Good luck!

Perhaps a large round table might mean a rug is not at all necessary. It could be a metal tray table, or carved wood like Rebecca Mitchell Interiors illustrates. Ideas also to consider, using multiple tables can be found at http://www.houzz.com/multiple-coffee-tables. I also agree with comments above that some color is needed on the walls. You could then hang round mirrors, or an unusual curved shape like RMI shows above.

HI, I HAVE 8 YEAR OLD HYPERACTIVE AND PLAY FULL SON. WE WANT TO DESIGN HIS ROOM WITH BUNK BED WHICH WOULD MOSTLY BE USEFUL FOR PLAYING THAN SLEEPING. WE WOULD ALSO WANT HIS ROOM TO HAVE STUDY TABLE AND RACKS TO KEEP BOOKS,TOYS AND THINGS. WOULD WANT MORE SPACE FOR HIM TO PLAY. PLZ HELP WITH YOUR EXPERT SUGGESTION. HAVE ATTACHED TOP VIEW(3D) WITH ALL DIMENSIONS

the 9' ceiling height will definitely help you with this. Here's what I would suggest (not knowing how far the side window is from the wall with the door on it: Use the wall with the door as the bed and closet/storage area. Build a closet, and put a loft bed at the top. Because it would have to be custom built, you can decide how high it is or how much storage you need. Kind of like this: [houzz=] or this: [houzz=] Can the space below the back window become a desk? And or/build a desk there with storage flanking it. Keep in mind that this isn't a very large room, and he'll probably want as much floor space as possible (at least my 8 year old does!).