After having lived in San Diego for a number of years, I feel confident in advising that you don't need to look any further for a place to book. Primary reasons are: quality and location.
1. Quality: Jennifer's place is exactly as described, immaculately clean and comfortable. Her instructions are clear and thoughtful, and although we never saw her, we felt right at home and had everything we could possibly need. San Diego can get warm in the summer, and the AC unit in the bedroom was small but might and did the trick.
We were able to cook breakfast for ourselves every morning because the kitchen was well stocked. In the evenings, we relaxed and unwound by having beers on the patio -- the perfect end to our days!
2. Location: The location is superb; anything that is interesting (subjective opinion, of course :)) is within a 20 minute drive. You get the convenience of being close to everything, but still tucked away in a beautiful neighborhood that really lets you sink in, and enjoy the San Diego lifestyle.