The hiss of the espresso machine, the grind of beans, spoons clinking against saucers — how different or how similar Espressolab Çekmeköy Mimar Sinan in Çekmeköy 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.