The Pool at Courtyard by Marriott Maui Kahului Airport
The pool at Courtyard Maui Kahului Airport is acknowledged by those who travel for a living. Out of 4 professionals tracked on TripExpert, 4 mentioned the pool, like Frommer's, Fodor's and Lonely Planet.
Courtyard by Marriott Maui Kahului Airport 
Frommer's
Fodor's
Lonely Planet
Oyster
Frommer's "The palm-fringed pool deck is especially nice at night, when it’s lit by the glow of the firepit"
Fodor's "If you're not all business, there is a 24-hour fitness center, a pool, a fire pit, and a complimentary shuttle to nearby shopping and restaurants (and to the airport), or you can walk to Costco and Kmart just across the street"
Lonely Planet "Other beneficial amenities include a guest laundry, a fitness center, a pleasant pool with fire pit and, best of all, a free shuttle serving a 3-mile radius (including the airport)"
Oyster "It has a lovely pool with gazebo seating and a hot tub, a bustling bistro and bar in the sleek lobby, and a convenient free shuttle that will take guests to the terminal (less than five minutes away) or to dining or shopping in the area"
