Batman,
The Rose Garden Inn in Pismo Beach/ Arroyo Grande is cheaper than SLO. If you are looking to motel it, there are several with kitchenettes in Pismo Beach, and most give outage rates. If you want a furnished condo, check out Coastal Vacation Rentals,
http://www.coastalvacationrentals.net/rentals/index.php, they have a lot of furnished condos.
Looking at anywhere from 1400 a month and up for a one bedroom, most have washer/dryers and you have to pay a cleaning fee and security deposit.
They all charge a room tax unless staying over 30 days.
If it is your first time there, check with other techs when you get to training. Usually, there is someone looking to share a condo.
Hope it helps. Let me know if you have any questions, I am going there this outage.