The Pool at Hotel Riu Plaza Panama
The pool at Hotel Riu Plaza Panama is endorsed by professional travelers. Of the 3 reviews tracked on TripExpert, 3 endorsed the pool, including Fodor's, Star Service and Oyster.
Hotel Riu Plaza Panama 
Fodor's
Star Service
Oyster
Fodor's "The only problems is that with more than 600 rooms, the reception and pool areas can be quite busy when they're full"
Star Service "Get there early, though, as the pool closes by sunset"
Oyster "For comparison, check out Radisson Decapolis Hotel Panama City -- the food gets better reviews, but the pool deck is less appealing"
