The Fitness Center at Courtyard by Marriott Maui Kahului Airport
Courtyard Maui Kahului Airport's fitness center is praised by writers. Of the 4 publications that we monitored, 2 endorsed the fitness center, like Fodor's and Lonely Planet.
Courtyard by Marriott Maui Kahului Airport 
Fodor's
Lonely Planet
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)"
