They were delicious!
The yellow highlights outline the preferred rooms. You really can't go wrong with any of the preferred room area's getting close to transportation.
The preferred rooms are closest to Classic Hall and transportation so IMHO it would be redundant to check "close to transportation".
I agree with a ground floor but only because I am extremely claustaphobic.
Let me start by saying that I LOVE the 50's, I would want to point out one drawback (for my family) and that is the location on this map where the smoking section is. It is the little blue circle smack dab in the middle of the preferred rooms between building 1 and 2 and it is a very popular and busy smoking area. If your family are smokers, it is a great location. If not, then not so much. In an earlier post, I shared our story about being assigned in building 2 in our trip September last year. There was never less than 4 or 5 smokers in that smoking area and we had to hold our breathe and run past the smoking area coming and going from our room until we found the LOOOONG detour down the walking path around the lake to get to our room. If you have anyone in your family that is sensitive to cigarette smoke, I would definitely reconsider a ground floor room in the 50's. A higher floor may help. Just make sure if you need to stay away from the smoking area, that you find another detour to your room. If you book preferred, that portion of your reservation "should" not be overridden by requesting that you room is ready.

Pixie dust for your perfect room!