Such a great result, so cool!

Hi Pazz, I really like your idea of seagrass wallpaper behind the bed, it would add texture and warmth plus make more of a feature of the window on that wall (compared with the other windows). If the wallpaper is dark enough, the concrete pendants would look great (but the cord will definately have to be jigged because you'll ruin the clean black rectangle of your window if the cord cuts it). I'm personally a fan of the Tom Dixon Beat pendant shape, and curved or rounded pendant would also soften the room which has lots of angular edges, plus it will throw wider light if the mouth is large enough! It's a lovely room, would love to see pic when you make your final selection! :-)

If you want to stay with the Tiffany look you could try to find some small simple ones like these. Otherwise I like the idea of simple glass pendants with an Edison decorative globe.

It might be worth while to consider the rest of the space also. Your breakfast bar/kitchen is located quiet closely to your dining table so depending on your kitchen space (apologies, I can't see too much of your kitchen from the photo) you might want to think about the overall style you want to achieve for you entire open plan space, and select pendants that would work for both your kitchen and dining. This is a project I worked on recently that shows how two different types of pendants can work harmoniously in the one space that is most similar to your kitchen and dining set up. Keep us posted on what you decide!