Possible Clues:

• Ancient Greek city synonymous with austerity
• Lysander commanded its fleet
• Guile in health club in place of austerity
• Peloponnesian stronghold
• Mississippi town in 'In the Heat of the Night'
• Peloponnesian city
• One yard on board, thanks to being in Greece
• 'In the Heat of the Night' town
• Capital of Laconia
• First-class gin's brought back from old Greek city