I would use whichever Asian piece fits the tv as a tv console. Then purchas or have custom built...two large column bookcases one on each side of the credenza...to reach to the soffit. Install glass shelves in the bookcases. Get rid of the cream sofa...I can't tell what is opposite it, but, it is white. It looks like you have too much large furniture all fighting to have their style be "the winner" and nothing meshes. Use the lower asian cabinet under the window...then a cluster of the traditional style chairs grouped for conversation. 2 and 2 facing each other perpendicular to the window. The small tables could be between the chairs. They could be very similar to the armchair that is in the picture, not matching...but the wood frames all the same color and the upholstery the same. Then repeat the upholstery in decorative pillows on the sofa. Using the armchairs in the traditional area, gives you lots of flexibility as you can easily move them over facing the sofa when you wish to create a larger conversational grouping, or facing the tv when there is something special you want to watch. Get rid of the curio cabinet and the round glass table as they are too much in contrast with the leather sofa. Paint the smaller tables in a bright color to add a pop of color...repeating the color in pillows on the sofa. (I see an orangey colored throw on the sofa...that would be a nice accent color) You could add lights in the bookcase columns for interest. Then, look for an unusual lamp or chandelier to hang in the corner behind the curve of the sofa. I would hang floor to ceiling draperies with the large grommets in the top to repeat the medalian on the asian pieces. Add a wide band of the accent color to the bottom of the draperies. Place 2 unique wall sconces on each side of the wall unit...something that draws the 2 styles together, maybe with hints of the accent color. A large piece of artwork, which includesvthe accent color, to be hung over the sofa. It would be fun to have a frame in an ornate traditional style, but painted to match the asian pieces. Thanks for the opportunity it was fun!

If you can't clean up the painted edge, you could always add a 1x3 piece of wood as molding. You can even carry it up to the ceiling to frame that wallpaper. I don't see that paint color in the wallpaper, or maybe it's a lighter version of the flower centers. Maybe stencil on a design using the darker color, or another color from the wallpaper to help tie it together. Then narrow floating shelves or vertical frames or something in the painted areas it you feel you need it. Maybe turn the bed around so the wallpaper is the headboard.

I'm not against colorful homes. There's bright, and then there's too bright. I wouldn't go with persimmon for the whole house. The photo you provided has lots of white trim which offsets the orange, but your house doesn't have that much trim (unless you were planning on adding some, which I think would look good no matter what color you ultimately choose, but even so, I wouldn't go with persimmon for the whole house, as it's still too bright). To repeat what @nwduck said, the other homes in the neighborhood don't appear to all be done in the bright colors, and so yours would stand out too too much. I like @deco's idea of the bright door, if you really love a bright color. For the rest of the house, any more subdued color would be fine, along with additional trim around the windows, and assuming that your siding color coordinates with your roofing color.

Adding taupe or beige to the walls, in most hues, would blend in too much with the draperies. I love the lavender in the bedding. It would pull the room together if you were to choose a grey paint that had elements of lavender or berry and silver. The color would be subtle, neutral, relaxing as well as refined. This slight shimmer will pull out the subtle nuances in the marble. As the headboard is already so interesting, it would be too busy to add anything too ornate on the wall. To open up the room and increase the light, you could hang a mirror. I would select an Art Deco style with metallic accents to continue pulling together the room. The marble is lovely, but combined with the sleek lines in the bed and bedding it creates a very smooth appearance. To create warmth, it is necessary to add additional texture. I would add a soft, plush or high pile area rug by the bed. How nice would it be to step out of bed on to that?