I created an abstract design using intertwined "C" and "S". In my opinion, it suggests social because they are linked and they`re graviting around each other. It goes very well with the model from the bar wall and with the overall atmosphere of your local. I used natural color shades: brown (representing the earth/ground), grey (representing the stones) and turquoise (representing the water). I also used an elegant art deco style font.
Please let me know if you would like to see any changes (fonts, colors, layout etc). Thank you.