Berlin balconies are spectacular – especially in summer. Look up and you’ll witness some of the city’s most creative spaces. You don’t have to be a poet or painter to live here: being a keen home gardener will do just fine.   Balconia: part-urban balcony, part-Narnia – a fantasy land just outside your window (instead of down the back of the wardrobe). A magical space to cheer you up on grey days (and there are many in Berlin), and on long, hot summer nights a paradise where you can find a cool breeze, a grill going and friends over for a feast. In all likelihood Berliners like dogs more than they do people, but they dig their balconies, taking great pride in both their…