Its a really lovely room! what a great place for kids to share. I like kids sharing rooms. I think you need another colour to tie it together. I would suggest a blue tone.... teal, navy blue, duck egg blue. to tie it together. Its a little to pale and looks sparse, but actually isn't. I would leave everything exactly as is, BUT, paint the back wall behind the bed teal and find a simple navy blue wall decal that is fun and kid- like maybe one with a sillouette of a boy and girl playing. I would paint the wall behind the sofa duck egg blue. Then I think it would suit both kids more and look more kid friendly. the blues will balance the pink and cream, but because you have a pale carpet i don't think it will look too dark. don't worry about making it totally kid like, its a room they will grow with, not a kindergarten, and it also needs to peaceful and restful for sleeping. besides with their art on the walls and bright toys everywhere it soon looks bright and kid like. Good luck!

I like the idea of bringing some black into your room. I think lamps with black shades would look very nice and because you love pink you could get black chairs with pink cushions. You need to tie in the pink in other areas of your livingroom but I would not overdue it. It's a beautiful shade of pink but too much of it would be too overpowering in my opinion. Post some more pictures of your room if you can.

The room has exquisite bones: the windows, flooring and decorative crown molding. If simplicity is what you want but with a bit more personal taste, I suggest the following: 1) paint the walls white that has a soft, warm undertone such as Benjamin and Moore's moonlight white or Dove. (Or try any good paint store for help on picking the right white color.) Paint the molding a stark white with an egg shell or gloss finish. 2) keep the bed covering as is. I love the warm colors and mixed patterns. If you do want more comfort, yes add a thicker mattress. Can you get a fabric similar for the table top? Or just remove the fabric from the table top, painting or stenciling it with a similar pattern. (see #5 below for where to look for stencils.) 3) Move the table to the head of the bed, add a modern lamp and lots of books or other meaningful, personal items. 4) Add a comfy chair or as suggested above, pile lush floor pillows where the table is, under the window. Use complementing or solid color fabric on the floor pillows or chair. Add a small table with more lighting. (See my most popular post on Floor Pillows. Towards the end you will see examples of suitable floor pillows. Or just do a search here on Houzz and the internet.) 5) Make a dramatic statement above the bed with a very large painting. Select with care based upon your personal taste: abstract, minimal but with a hint or some of the colors found in the bedding fabric. It doesn't have to be centered, a little off centered will do since there appears to already be something on the wall above the bed. Do add a soft art lamp above the painting. (If you don't have money for the painting, purchase a very large canvas, take your time and create it yourself (collage it, play around with paint on paper before adding it to your canvas, stencil it, etc.--but have fun and make it personal) Here's a great place for getting a wide range of designs for stenciling: Cutting Edge Stencils. Note you don't have to take the design all the way to the edge of the canvas! 6) Add a small (wool) flokati rug in front of the bed. Get the kind that comes from Greece, it has long-fibers and a plush pile. These rugs are to die for when it comes to comfort and texture--and they're inexpensive. Take a look and if you like it, be sure to get wool: Flokati Rug.Net. These ideas will give you lots of varying textures to get rid of the boredom; contrasting colors for depth and drama; play up the wonderful architectural elements already found in the room; personalize it with what you love; and still, keep it simple and beautiful. Use soft lighting. Good luck!

Here are some photos that may help you. You have the ceiling height to have a nice heavy rod just above the top of you window that could run the ceiling width. That will give you the space to draw curtains back to expose the entire window. I highly suggest that you work with a designer. A good designer has access to literally thousands of fabric choices and will be able to help you in selecting the perfect fabric and design for your room.