i hope all is well.
i hope you didn't get your hopes up. first of all this property is NOT in santa monica. although the address seems to be a santa monica address the ad states Mid City. i don't see anything on the MLS (realtor site) for this property. 1-bedrooms in santa monica will start around $1,700/Mo.
you may want to connect (join) Westside Rentals http://(www.westsiderentals.com). they have the most inventory available.
i hope this helps.