Also, if you want a little more from the room, I would recommend a 1BR Villa at Old Key West Resort, it comes with a full kitchen, huge jacuzzi tub and it's so comfortable and removed from everything, it felt like a true vacation for us.
Here are some photos to look at if you like. http://www.wdwfanpics.com/oldkeywestresort.htm
I'm sure there are other great recommendations to be found, those just happen to be my two favorite.
I'll second the Yacht and Beach Club. We stayed there last summer and LOVED it. Our room was in the building closest to Epcot so it was a very short walk to the park and we were able to see the fireworks from our balcony. The room was spacious and the pool was fabulous. Plus, they had movies on the 'beach' at night.
We stayed at the Polynesian in 2004 and that was also very nice. Again, the rooms were really large and the pool area had a lot for different ages. It was a bit of a walk to the main building and the pool, but on the other hand we were in the building closest to the TTC and it was just as easy to catch the monorail there.