Warsaw was devastated during World War II, so when designer Karolina Howorko, who flits between the Polish capital and Amsterdam, was called upon to revamp a petite studio inside a building dating from the 1930s, she was both delighted and shocked by the edifice’s resilience. «Until the facade was restored a few years ago, you could still see bullet holes from the war,» says Howorko, who founded Studio Hoka. «There is also a private garden, which is a rarity for the city center.»