My partner and I loved our stay in San Diego - Carol was a lovely host and even though we were only there for one night (too short of a trip), we were able to make the most of it with Carol's recommendations.
The house itself is gorgeous - the cozy decor from all around the world brought such a homey and welcoming feel to our stay, especially when compared to a hotel. The room is cozy and has a little porch/balcony, and a private bathroom just outside. Towels and supplies were abundant and clean. Didn't get much chance to walk around but the neighborhood is very peaceful, and the view from the main balcony is incredible - overlooking the hills.
For anyone like myself who doesn't drive, you will need some sort of car transport to get around, but there were plenty of ubers/lyfts around if you waited ten minutes or so. We were about 15-30 minutes from the airport, Balboa Park, and La Jolla by car.
And the best part of it all, Carol herself was so fun to chat with - wish we could have stayed longer!