The Concierge at Sheraton Grand Panama
The concierge at Sheraton Grand Panama is referenced by professionals. Out of 5 professionals tracked on TripExpert, 2 referenced the concierge, including Frommer's and Star Service.
Sheraton Grand Panama 
Frommer's
Star Service
Frommer's "The concierge desk, presumably accustomed to shuttling out passengers in cabs because of the hotel's distance from downtown, can accommodate any request for transportation or tours"
Star Service "Car rental is available, and concierge and tour desks staffed during business hours can make arrangements for excursions"
