Well-hidden in the rear of a building across from the fire department, this small, unpresuming, underground bar allows you to lounge out over several love seats while sampling the long list of Polish craft brews and smoking wherever you want to. Run by a collection of friendly young locals, Machina does a bit of a chameleon act throughout the week, meaning you never know what you might be stumbling into as the music ranges from chill-out to club anthems, and evening events include film screenings and concerts. It was 'speed dating' during our visit: with a timer that forces participants to rotate partners every five minutes, what initially seems embarrassing could actually be a boon for foreigners, with enough pretty girls in the room to make us regret already being on a date.