I stayed there last May and will be staying there for part of our trip this May...
Last year we were in the 70's and found the location to be close to the lobby and bus area. I also would prefer not to stay in the 90's or even the 80's for that matter. For one if you have a room on the back side of the 90's you can see a main road (I know it's not a big deal but I don't prefer it, crazy me would rather view a parking lot then a road) also they are in the back of the resort, I like to be close to the FOOD and lazy me hates to walk any further then I have to after a long day in the parks...But who knows I may get the 90's this time and love it, so it's really all personal preference and remember no matter where your room is located or what your view is of, a Disney vacation will always be a magical one and you will have a great time!!!
Also keep in mind the rooms are the same size and set up in all the decades..