There are 3 good restaurants at AKL. Sanna, Boma and Jiko are good eatsLike many of the replies you've received it depends on your likes and needs.
If you prefer to be close to the "action" then the Boardwalk or Yacht Club are the best choices. I've stayed there several times and it's always bustling with entertainment and action. Its obviously very close to Hollywood Studios and Epcot and has tons of great eating locations. The swimming pools and slides are top notch.
If you prefer to get away to a reclusive atmosphere after a busy day in the park then Animal Kingdom is the way to go. It's the quitest of the listed resorts and is quite beautiful. Wilderness Lodge is quit as well (not as quite as Animal Kingdom). However because of its proximity to Magic Kingdom it can get noisy sometimes.
The Contemporary is a "cool" resort and has some good restaurants. It also has the best marina and watersports offerings. However, it is a large conference center and therefore there are usually many business folks there hence it loses some of the Disney "magic" you get by being surrounded by families strictly there for the same purposes you are.
If I were you I would stay at Animal Kingdom then visit some of the other locations for dinner or lunch.
We were looking at Boardwalk too but the clowns in the pool area is a deal killer for me. :lookaroun
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