Hi Edie! There is not one answer to this question as there are some great resorts located around the Magic Kingdom and then another group located close to EPCOT and Hollywood Studios.
There are three resorts located on the monorail system that connects them directly to the Magic Kingdom and with one transfer to EPCOT. These resorts are the Contemporary, Polynesian, and the Grand Floridian. All three of these are deluxe resorts and you can read more about them by clicking
HERE. Your deluxe resorts will be higher priced since their location is the most convenient to the parks.
There are also three deluxe resorts located next to EPCOT and within walking distance to the Hollywood Studios. These resorts are the Yacht Club, Beach Club, and Boardwalk. You can compare these by clicking
HERE.
These six resorts are considered by many to have the best locations and it depends on what parks you will be spending the majority of your time as to what area you wish to be in.