We haven't stayed in Maui yet, but when I'm comparing family resorts I spend a fair bit of time reading the recent Booking.com reviews. I usually filter for families with children and sort by the newest reviews rather than just looking at the overall score. Parents often mention things like how good the pool is, whether the beach is easy to access, room size, and if the kids actually enjoyed staying there. I've found those comments much more helpful than the hotel photos. Hope you find somewhere your girls love!