Every babysitter in Lodz owes their weekend wages to Siodemki Club, which packs out with the kind of crowd that appears to be shaking off the chains of suburbia as Ace of Base and Abba urges them along. You won’t encounter any unwanted gropes, sleazy characters or door charges, just a good-time club with a bustling dance floor and a bar that’s shaped, randomly enough, like the prow of a boat.