Blink and you might miss it. There’s not even a sign to alert you to Cantina Social, a hidden gem of a dance bar. It’s nestled into a vacant space at the end of an alley, wedged between two buildings in Monastiraki. By day, antique dealers and actors chat over coffee and cigarettes in the secret courtyard. After dark, the cool kids of Athens congregate at absolutely all hours to drink and groove in a low-key, intimate atmosphere. Simple but funky decor, intentionally inexpensive drinks, neighborhood regulars, and great music by resident DJs that veers wildly from indie pop to disco beats are standard; the occasional exhibition or event spices things up. Always open.