Need some thoughts how to arrange the speakers

I have B&W Matrix 803 S2 and a small room (~4*5.5 meters, see the attached picture). I'm in a process of renovation my flat and I have a possibility to make some changes to get better acoustic results. By the left side it's a kitchen, by the right side - three windows. Yellow is a bar table, blue - sofa, red - tv and green - Matrix. I guess the current version is the most optimal for living but not for the music) But the task is to keep everything in the room...

Attached scheme
I'd agree with what everyone else has said. Putting the speakers with the windows behind them would be the best layout. That should give you a fairly symmetrical radiation pattern between left and right speakers. Symmetry is very important to stable soundstaging.

And yes, some thick curtains would be important. As would some absorber panels or diffusers in the first reflection points.
That has to be a huge improvement. As long as you can deal with all the glass using some type shades, and read all that stuff in Russian on your blueprints, the system should sound pretty good.