Tara, you may stay at absolutely any Walt Disney World resort you want!
The three Magic Kingdom area resorts- Disney's Grand Floridian Resort, Disney's Polynesian Resort, and Disney's Contemporary Resort- are all closest to this classic park. Each of these hotels is just a monorail ride away from the Magic Kingdom. Every resort at WDW, however, has access by bus to the Magic Kingdom and the three other theme parks. Take some time to peruse the
Accommodations section of the WDW website. Consider location, your budget, and theming to pick a resort that will meet your family's needs.
If you would like recommendations or have additional questions on any aspect of planning your WDW vacation please contact me. I love helping families create magical, memory making vacations.