The stay at Al and Sybil's place was absolutely fabulous. It is a nicely furnished "garden house" with a separate entrance from the street. You can park your car directly in front. The location is clean, very quiet, safe and surrounded by nature. Even though you are not far away from everything (shopping, airport downtown, Pacific Beach, La Jolla, Sea World, Balboa Park) you will always need a car with a driving time between 5-15 min.
Al and Sybil were very helpful but also respect privacy. When we arrived late at night we found everything we needed for the breakfast on the next morning.
When I come back to San Diego I would definitely stay here again. Stay here and you will be happy.