Another vote for the recently renamed Marriott Marquis & Marina. Their pool revamp was set to re-open May 3 so you should be good to go.

I love La Jolla but, as mentioned above, the Marriott La Jolla isn't really 'in the village', where you want to be. It is however, worth a drive to La Jolla just to take your youngster to the kids beach to check out the seals and maybe explore the tidepools as well. Beautiful area and October is one of my favorite months in Southern California weather-wise.