I just stayed at the Radisson John. Awesome lounge on the top floor. You can shoot the 24 arrivals up there from the roof. I loved it. If you book it make sure you book the LAX Radisson. There is another one a few miles away.
Hey that guy with the private jet can bail us out! Why? HE CAN AFFORD IT!
I normally stay at the Embassy Suite in El Segundo. It's pretty nice in my books. It can be pricey tho ranging from $120-$170 for a regular room. If you plan on shooting at imperial Hill and don't have mode of transportation, it's an easy 10 minute walk from the hotel. Also, most rooms are facing the airport so you can see what's going on in your private balcony.