I haven't stayed in the 60's, but we were in the 50's and it had a very nice pool over there (a jukebox). The really neat thing was we could see the fireworks from Epcot while standing at the end of the building.
It did look like the walk was closer for the 60's building, but it really didn't feel all that far to us for the 50's building. I think they all seem to be located well.
DJ