The Tiverton, Health & Wellness Hotel (on-campus, check here)
More luxury and expensive choices if needed:
UCLA Meyer & Renee Luskin Conference Center (on-campus, 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 closest parking structure to the Physics and Astronomy Building (PAB) (outlined in red below) is "Parking Structure 2" ("P2" in yellow below). The rate is $16.00 per day for visitors.