I think you will like the Contemporary if you stay there because you can't beat the location and you can walk to the MK in under 10 minutes. You can take the monorail to MK and Epcot which eliminates a good amount of time spent on the buses. (I take the buses as little as possible) You can take the boats to WL or Ft. Wilderness. There are two pools and a huge arcade as well as a good restaurants.
If you stay in the tower at the contemporary you will have an amazing view. I think the rooms are spacious and bright and we've enjoyed each of our stays at the CR and never had any problems.