Some businesses have been uniquely positioned to thrive during the coronavirus pandemic, including pharmacies, grocery stores — and Sybaris. You might say every day has been like Valentine’s Day — a perennial sellout — for the members-only pool suite concept that caters to couples only. While hotels have suffered from steep occupancy drops throughout the nearly two-year health crisis, Sybaris experienced a 12% increase in occupancy last year compared with 2018, said Dan Fahrner, Sybaris’ marketing director for 25 years. “We have experienced an unprecedented level of increased business. It’s be…