I've never brought an RV to Anaheim.
But based on which hotels have bigger parking areas and room to turn a big vehicle around.....
Anaheim Plaza Inn is a sure bet.
Fairfield Inn probably.
Hojo probably.
Park Vue Inn maybe.
Ramada Maingate maybe.
Best Western Park Place inn maybe, check the clearance hieght too.
Tropicana maybe also check the clearance.
Except for the top I'd ask if you RV is really long. For all call and let them know, they can probably block out a few spaces for your arrival.