Ah, it's a custom for me and my friends to stay at the Holiday Inn...You aren't gonna get walking distance (even though there is a Holiday Inn across from the Center)...Actually, you can try it, just go to Holiday Inn's website and do a search in LA for hotels at that date...
The Hotel across from the Convention Center is on Figueroa Street...If it is booked up, stay at the one on Highland Avenue...That's the one I'm used to, very nice, I love it, it's not in walking distance, but it's near the walk of fame, and all you gotta do is take a couple of Trains to the C.C.