The Pool at The Westin Denver International Airport
The pool at The Westin Denver International Airport is recommended by professional travelers. Of the 3 professionals that we tracked, 2 referenced the pool, such as Gayot and Fodor's.
The Westin Denver International Airport  Gayot
 Gayot Fodor's
 Fodor's
 "At the end of a long travel day, visitors can tuck into Westin’s signature pillow-top Heavenly Beds dressed in high-end linens, and enjoy year-round access to a heated indoor pool and hot tub" 
 "The indoor pool and fitness rooms also feature noteworthy views, including the airport’s famous tented roof"