Recommended hotels:
The UCLA Guest House (check here)
The Tiverton, Health & Wellness Hotel (check here)
More luxury and expensive choices if needed:
UCLA Meyer & Renee Luskin Conference Center (check here)
Traffic:
The best way to travel from the Los Angeles International Airport (LAX) to UCLA is by taking an Uber/Lyft. You can order an Uber/Lyft at LAX for about $35.
There is a free bus (LAX-it) at LAX to take passengers to the Uber/Lyft pick-up area.
Parking:
The parking information can be found here. There is important information for those who have a valid parking permit at other UC campuses and plan to park at UCLA.
The most convenient parking area is called "Parking Structure 2" (see the map below. You can enter it using your google map as well).
More information can be found at here.