This is a great map to view walking distances. Play with the zoom. Notice where the esplanade is, the park entrances. (I can't link, I'm too new here. Someone will hopefully direct you to good aerial maps of the area with labels or you can google it.)
We're staying at the Tropicana next month. In the past we've stayed at the Fairfield, Desert Inn and Marriott. All were fine. Desert Inn was a little seedy, though.