Can you bear another set of opinions...? The keys to the look you are emulating are color discipline, symmetry, scale of pattern, and quality of finish. The three patterns in the inspiration photo are the tile pattern of the rug, the rough fiber of the chairs, and the tufting on the sofa. Everything else is smooth (the painted table, the velvet pillows, the lacquered lampshades, the simple bases). The rug brings the grid of the windows to the floor without copying it, and its mossy gray-green color looks natural, like a forest floor, while the tile pattern is reminiscent of old Portugese or Dutch tiles. The green pillows are the only other color besides taupe, cream, black, and white, so take care when you choose your rug to stay within a disciplined color palette. You can also see that the scale of the pattern in the rug is large, and its surface soft and plush, by comparison to the chair's rough texture and the size of the woven pattern. The fabric on the very simple sofa is also velvety and smooth, and the tufting adds depth while maintaining its strict form. The first rug you showed doesn't have any of that contrast...its pattern is small scaled, its color is very like the color of your chairs, and its texture is also rough like the chairs. What makes the inspiration room work is the contrast between the soft plushiness of the rug and the rough natural fiber of the chairs. The third rug that laurensmom posted has some of those characteristics, but may not have the softness and the plushness, which adds the sense of luxury to the scene. Most of the ones you've shown, or been shown, have none of that depth and lushness in their construction. I also think you might want to rethink the stain-vs-paint decision. The grain of the wood will add yet another texture and pattern to your mix, and won't help produce that serene, smooth, modern touch. I'm very glad you aren't opting for a natural top and painted base...that would give you a country kitchen look that is nothing like your inspiration picture. Keep looking at your inspiration picture, and analyzing every aspect. Then you'll be able to incorporate all the elements that make that very sophisticated but relaxed and hospitable space work for you.

i Think your colors are fine. can You pull the rug out from the wall a little and let a little more of it show? The current furniture arrangement seems very formal, but the couch reads as comfortable. What if if you put the two chairs side by side, angles towards the (assumed) tv? you may have to slide the couch one way or the other. I think that might make it blend better.

Grover's renderings are right on. It was the crunched chairs & side table killing your look. You need some breathing room, a grounding rug & a designer to come sweep through & balance. GL :)

Thank you everyone for being so helpful! I will have photos up of the space when I go there on Saturday. I'm feeling very relieved you all think it'll work. Regarding the pillows, great idea about switching round the textures. I'll put up photos of the space once I go there tomorrow! I'm also looking to go to second hand shops or markets to find some vases soon, if anyone has any recommendations for places in London?