This is review and guide for those who are planning to give their CS exam in Los Angeles. I was there recently. I had no one, but this is how I managed the trip and exam.
If you can book a hotel, I would recommened Hacienda hotel which is just 5-10 min walk from the exam center. LA has terrible traffic, so buying a hotel elsewhere would be a waste of time and money. Per day the cost is $80. But if you book the hotel along with your ticket on expedia, then you get a 25% discount.
In the hotel there is a small library in the main lobby, that is where most CS exam takers study and practice. So you can interact with them there and get a study partner too!
Infront of the hotel across the street is a supermarket, you can get snacks and drink from there. Also there is a halal arab fast food restaurant, especially for muslim students who eat only halal food.