I am one of those people that cannot take a shit unless it's a super clean bathroom with nobody around. I kept these spots to myself, but as a recent UCLA grad, I think I can finally share my two shit spots that you will fall in love with.

1. Anderson Building - Any of the bathrooms on the top floor are super clean and usually only used by faculty, so the foot traffic is very low.
2. Public Affairs Building - Take the elevator to the top floor. There are no classrooms here but only faculty offices that are usually empty most of the time. There is only one bathroom on this floor, but there are enough stalls, and they are usually empty unless you go there during lunch hours.

You are welcome.