container and roof structure could work very easily. Have one container aimed be the conditioned office space. Use clear panels for natural day lighting across roof structure. Large Big Ass fan to cool.
How to re-cycle old containers into new re-teats. I re-cently ate in a restaurant in Rotterdam called 'Wijn of water' and will re-pin a pic next. (ps. why all the 're-' things? My company is called [re] )