There used to be 4 RV parks. Anaheim Village, now closed. Anaheim Resort, Orange and Anaheim Harbor. We usually stay at AH, mainly because it's the cheapest. We usually unhook and take our motorhome into Disney's large vehicle lot. Makes for great afternoon breaks. AH is a parking lot with hookups. It has a nice but small pool and clean bathrooms. I have seen security there the last couple trips. Also the back 2/3 rds are monthley's. This makes for a lot of thru traffic.
Orange has lots of trees and gives you a better feeling ( surrounded by orange trees) but the sites are very hard to get into. It is much more expensive. It is past Angel Stadium.
Anaheim Resort looks pretty nice although I have never stayed there. It gets good reviews and is a little closer than Orange.
It you want a nice camping feel and don't mind a little drive. Dockweiller Campground is right on the Pacific right at the end of LAX. You are feet from the ocean. It can take some time getting to DL depending on the time of day.