The clientele in the Barclay Bar is quintessential New York: businessmen loosening their ties after a long day at the office, couples sipping aperitifs before a night on the town, shoppers taking a break from the frenzy of Fifth Avenue. There are 20 wines by the glass on the menu, and the mixologists behind the bar prepare seasonal cocktails as customers look on. On weeknights, a classical guitarist provides a soothing reprieve from the buzz of the city.