Campsite in Oaxaca

Looked up Oaxaca on this forum and found good information on route from Oaxaca to Puebla. We are currently about 20 km north of Tulum, Yucatan

We know that there is information on RV site in Churchs' for Oaxaca. Is there any current information. We plan to go from San Cristobal de las Casas to either Oaxaca and north or do the west coast. Is the West Coast worth doing. Have seen posts that it is incredibly hot this year.

Reed and Elaine