Entertainment folk live & work in all parts of LA from the valley to the west side to West Hollywood to Silver Lake to the beaches.
I'm not a Priceline or Hotwire person but if you can find a decent rate, then West Hollywood area meets your criteria for where to stay.
Congested traffic is a way of life in LA.
You might want to pull up threads in the LA forum for the past year & peruse them. I think some others have had questions re: living here etc.
Also since it's the start of a 3-day holiday & everyone will be heading to the beaches

you might not get too many replies to your question until next week.
LAX, BUR or Long Beach (JetBlue) would work. Go w/ what fits your schedule/price the best.
Cheers.