Hi Erica,
I have an 8-year-old daughter myself, so I am going to consider what she likes the best in giving you some recommendations on where to stay. I recommend that you look at all of the
Walt Disney World Resort hotels, and consider my thoughts here as just one source of information to help you plan.
Walt Disney World has resorts available at a number of prices. I will suggest one from each category.
At the Value level, I would recommend Disney's Art of Animation Resort, where you can choose to stay in a traditional hotel room or a family suite. Disney's Art of Animation Resort is positively amazing. From larger than life characters from Pixar movies, to a delicious food court, it is a wonderfully fun resort. Your girls might enjoy a stay in the Finding Nemo section, which includes family suites, or the Little Mermaid section, which houses the traditional hotel rooms.
At the Moderate level, I recommend Disney's Port Orleans Resort - Riverside. This beautiful and lush resort evokes the Old South. If your girls like princesses, they may really enjoy a stay in a Royal Guest Room. The Royal Guest Rooms have been themed to include many princesses.
Finally, at the Deluxe level, you cannot go wrong with Disney's Polynesian Resort. It is themed as the South Pacific and is beautiful. The resort is right on the monorail line for easy access to the Magic Kingdom and Epcot. I cannot resist giving you one more recommendation at this level - Disney's Beach Club Resort. At Disney's Beach Club Resort, you are in walking distance of Epcot, and I bet that your daughters will love Stormalong Bay pool area, which includes a lazy river and sand beach!
I hope that this gives you some ideas to start looking at Walt Disney World resort hotels, Erica. Please do not hesitate to ask if you have any further questions!