There are plenty of great fields around. Most city fields are not maintained. This time of the year what you'll get is dead grass and dust. Reach, SSC, Santos and Paloma are maintained. I'm not a Mesa native, but I would guess that those fields haven't been maintained from end of league play.
We practiced on those Scottsdale fields which were excellent and the clinic was at a high school in mesa with 2 prefect grass fields also.