Karlsson leads me to the last door on the left, unit 5B. The door unlocks via an electronic keycard, then he’s swinging it open. “I can’t be sure what state I left it in,” he warns, standing back to let me through first. “I’m sure it’s great.” He cuts on the light, and I do a slow half turn. Okay, this might be the coolest apartment I’ve ever seen. It has a massive, slanting glass wall that offers a great view of the city.
