My concern is lighting. There isn't much headroom so ceiling lights to be avoided unless very shallow, unless fitted at the edges in such a way as to provide sufficient light for the room. In addition the ceiling is a slab of steel reinforced concrete so downlighters are out as well.
One possibility is to use fluorescent strip lights on the three out of four walls after the plastering is finished. I don't think that will look particularly good though and I'm not sure whether there would be sufficient light.
I'd prefer to use LED (Light Emitting Diode) lighting if possible but I'm short of ideas.
Any inspiration gratefully accepted - thanks