We had a lovely time staying at the Willow Lake RV Park on our visit to Prescott. The bathrooms were spacious, and there is a trail directly behind the park that leads out to Willow Lake and a plethora of trails for the trail runner/hiker/explorer. They have great wi-fi, the area has lots of trees and shade and picnic tables too!
We actually arrived late for check-in the the office left our our map and information for us.
We had a 30' RV we wanted to pull through and had no problems with this park. I'd recommend a stop-in here for sure! Their neat little tent-camp sites were even closer to the lake and the trails.