One of my first vacations as an adult was in 2000 to Los Angeles. I was there for 6 days and staying with a friend. My friend was working a couple days that I was out there so I rented a car and tried my best to get around and see the city.
I went to Beverly Hills, some mansion that a Beverly Hills cop suggested since a lot of movies had been filmed there, Hollywood and the Hollywood walk of fame, and the area around UCLA. With my friend I did a tour of the Warner Brother Studio, Santa Monica, and Rodeo Drive. We were going to go to Venice Beach but I had to beg my friend to go there and then when we finally did the weather sucked and the parking was worse so we left before we even parked the car. I did get to go there on another trip when I was passing through LA, and it was worth the visit. The city, or at least the areas that a tourist would visit, are beautiful, and there's a lot of life there, it was good.
After 4 days though the city felt as fake as a bad boob job. like all the pretty tress and wide roads and flowers and plants are all there to mask a city full of backstabbing people. I don't regret my time in LA, it was actually great and I suggest it for other people interested in seeing the city - it is LA. But if I went back there I would probably just go to the Disney or Universal Parks and do stuff like that, at least I know that what I'm getting there is supposed to be fake.