When the road turns to dirt just after entering Tonto National Forest, go another quarter-mile. There is a sign pointing the way to a paved entrance road and parking lot. At the parking lot, be prepared for a steep, half-mile hike on a wilderness trail ending at the ruin. About 50-60 minutes' drive. Anytime during daylight hours.
Admission is free.
The parking lot has picnic ramadas and a restroom, but no other facilities. Bring drinking water. The trip is approximately 90 miles from the Phoenix area. Take exit 289 off I-17 and follow the signs 3 miles to the visitor center parking lot. The drive is about 2 hours from Tempe.