The first time I went with my husband, it was December 2011. Took the bus from Athens, had an ok time.
The second time, I tried to take my husbands family in July 2012 but we were rejected at the door because my father in law, who is in his late 70s, was turned away because he was wearing Khaki shorts and a golf shirt. (it was the heat wave so 40 degrees out) The shorts and shirt was pressed. After we were told we could not go in because he was not wearing pants, a man in ripped jeans and dirty running shoes came out. The woman who told us this, was not very sympathetic in both English and Greek. We will not be returning.
Inside, it is quite smoky so be ready for that.