We bring caravans into the hotel Baruk (Formerly Bosque). There are a couple of issues. It is noisy, a train behind the hotel and air brakes on the highway on the other side. The big issue is that this hotel is a convention center and the RV parking lot is often filled with cars. Plan to arrive late in the afternoon if you can. You really need to let them know you are coming ahead of time so they can block off a spot for you if they have an event (weddings are big here). You can find yourself trapped when you want to leave so plan an early departure and exit the park backwards (the way you came in). It can be tight to go out the right way. There is a loop at the entrance you can park in while you check things out.
BTW heading south, the outer ring road around Aguascalientes is now fixed, but it is still rough.