Hi Jessica,
There are many options for you and your girls at Walt Disney World. You might consider a Little Mermaid room at
Disney's Art of Animation Resort. This resort includes accommodations and themes from four Disney motion pictures. Please note that while this resort offers family suites, the accommodations based on The Little Mermaid are standard hotel rooms. Another fun option is a Royal Guest Room at
Disney's Port Orleans Resort - Riverside. These rooms are lovely and include many touches, both overt and hidden, from Princess Tiana and her princess friends. Another option is
Disney's Grand Floridian Resort & Spa. This resort may appeal to your girls with the princess-like elegance of the theme. This resort also houses
1900 Park Fare, which hosts Cinderella's Happily Ever After Dinner. Your girls might also enjoy
Disney's Perfectly Princess Tea, in which they can enjoy a sing along and storytelling. Guests do not have to be staying at Disney's Grand Floridian Resort & Spa to go to 1900 Park Fare or Disney's Perfectly Princess Tea, it would just be quite convenient if you were.
Walt Disney World offers resorts at a variety of price points, and you should know that Disney's Art of Animation is a value resort, Disney's Port Orleans Resort Riverside is a moderate resort, and Disney's Grand Floridian Resort & Spa is a deluxe resort.
Please do write back if you have any further questions, Jessica!