Very impressive venue. Note that this review comes from a casual admirer of baseball: Chase Field is cool! the stadium is located right in downtown Phoenix with great public transit service.
Once you are inside you have great access to everywhere it seems. I am accustomed to LA where you are restricted to your level and can't move around much. Chase allows you to walk completely around the base level which gets you great views of all of the action. The lower level is also where most of the food selections reside, take your time scoping out your favorite ballpark dog and beer while taking in the game.
Another great feature of Chase Field with its proximity to downtown is the choices surrounding the stadium before and after the game, you defiantly can make a great trip out of a game here.