While in Gila Bend, we stayed at the KOA. It's a Journey park. Journey means there is no reason to stay there very long. It's a good overnight for a transit.
Interior roads are paved and wide. Sites are gravel and fairly level. Utilities are in the back of the site, the site is 90 feet long and 55 feet wide. There is lots of room. Power is clean, water pressure is ok. Verizon 4G is slowish. There are no pesky trees to interfere with satellite reception. No data on laundry or restrooms.
We would come back here. It's really easy on easy off. I will add, however, that the park is very close to a busy freight train line. It runs a lot at night, but they don't blow the horns, so it's no too awful.