The hiss of the espresso machine, the grind of beans, spoons clinking against saucers — how different or how similar Sudems Cafe & Bubble Waffle & Serpme Kahvaltı & Oyun Alanı in Beylikdüzü sounds from that classic cafe hum is up to you to find out. The calmest stretch is usually the cigarette-break lull — once the smokers step out, the room settles and the seats get better.