Cesar Chavez park is the best that the SW Valley has to offer! Located at 35th Ave & Baseline at the base of South Mountain, it's a great location for the residents of South Phoenix and Laveen. I've seen it very busy, but it also seems to be one of the best kept secrets in SW Phoenix!
There is ample seating throughout the park, including ramadas and benches. A 1.1 mile trail wraps around the lakes in the center of the park, making it perfect for runners and walkers. There is a small tot lot and playground on the east side of the park that families will enjoy. No matter what time of day you visit the park, you will find people around the lakes fishing. Be careful- a friend once tripped on a fishing line that a careless fisherman didn't remove from the sidewalk and broke his elbow!
Drawbacks: this park is always dirty, as no one seems to clean up their trash after visiting and it is not safe in early morning or evening hours. Otherwise, enjoy one of the better city parks!