Daniel and Melissa have a wonderful in-law unit in the sleepy neighborhood of Piedmont Pines.
They underwent a renovation recently, which resulted in a really nice bath and kitchen(ette), and we have been thrilled with our private and relaxing their unit is (they're also very respectful of our privacy - the separate entrance really makes you feel as though you're in a separate building altogether).
In-unit laundry, tons of closet space, fresh linens, a private patio and driveway parking are all huge bonuses.
If you're hesitant about living so far away from SF, don't let that be a deterrent (I commute daily and simply drive to Macarthur BART where I'm able to park easily - coming home is relatively traffic free and I can be off the train and back home within 20 minutes).
It should be said that both Melissa and Daniel are very lovely people as well - highly recommend!