We just finished much of this trip at
PanAmTallman.Wordpress.comPanAmTallman.Wordpress.com
The RV Buganville in Guanajuato is going to be your only choice. The Servicio Morelos outside Zacatecas has closed their RV section but we were allowed to park amongst the trucks. The Hotel Baruk is an option. The Hotel Medrano in Aguas Calientes may be a bit tight for 38 feet, but was a good stop for us. The Motel Villa Argones in Durango was our preferred choice. And, the Hotel Villa Mexicana in Creel still has hook-ups but could use a lawn mower.