Pros: Location, very easy drive to all of the things we wanted to do and see including Sea World, San Diego Zoo, Old Town, the beach etc. Our 3 year old loved the toys in the closet and the cool " clubhouse" under the stairs. Bed in master bedroom was very comfortable, bathroom clean, kitchen stocked with all appliances needed to make a meal. Great recommendations for places to eat, we especially enjoyed Phil's and Breakfast Republic.
Cons: You are staying in someone's basement so you hear everything from upstairs; kids running, toilets flushing, showers, washer etc. Also, the air traffic noise was pretty loud and very consistent starting at 6 am. Bring ear plugs if you want to sleep in!
Overall we had a nice stay!