How delightful to discover that, after a hard day’s shopping up and down Sydney’s ritziest retail precinct, in the middle of all that gloss and glamour, here’s the perfect spot to sit back and relax a while with a sparkling flute of champagne. Throw in delicious macarons by one of Australia’s finest francophile chefs and suddenly you’ve found a heavenly sanctuary. Welcome to the Champagne Cube by Pommery! Designed as a sleek minimalist cube, to complement the luxe marble and brushed stainless steel interiors of Westfield Sydney’s luxury precinct by renowned Japanese interior design firm Wonderwall, Pommery’s silver and blue themed temporary ‘salon prive’ open bar installation on Level 3 is…