The area has a lot of memorable vistas, but there's a lot of heavy foot traffic at the Anime Expo.
If I can make a suggestion, there's a hotel nearby I should be staying at, the J.W. Marriott. Their pool deck is on the 4th floor and it overlooks L.A. Live Plaza.
If I get rooms, I can let you in there for an afternoon/sunset proposal with the lights of L.A. Live nearby.