I have been to California several times and really love it.
In particular I love Disneyland Resort. We are staying at Anaheim Camelot In & Suites which is very close to the park. I think you need to be pretty close by so you can pop back to your room if it gets too hot or too busy. I am really excited to see the new area, Cars Land in Disney California Adventure Park. I have always liked California Adventure, it has a good vibe and some great rides, like Soarin’ Over California.