i am new to this site and did not know we could post directly to the designer! i quite like your idea, and i left the comment in the general comments. please see there, and next time will give you feedback directly.
we also do events here so it we have that component and not just the paintings/photographs on the wall.
in the end, the letters don't look good in the boxes that way... it looks too happy go lucky. those squares without the bar are better, maybe make them into more zig zag geometric pattern, without the lines above? i like reflection or some effect, maybe hues of blue... grazie mille!