Try this : pick up the phone especially on a saturday night , mind the time difference, dial 00306974800545
Now , if it is 11 o clock greek time , there is an extremely large possibility that the lady that will pick up the phone is having a drink in Ostraco bar, actually within the premises !
In the possibility that she's not say " hallo, would you be so kind to tell me the phone number of ostraco bar? You'll probably find that she's gonna be very polite and helpfull, unless she changed her phone number !
Hope it helps
