I enjoyed staying here very much. Susanna's cottage is peaceful and quiet and looks just as it does in the photos. It's a comfortable, relaxing place to stay.
While the neighborhood itself is pleasant and itself provides good opportunities for walking, the cottage is just a short walk to the northeast corner of Balboa Park. It's also within three blocks of a number of good restaurants and, a little further on, a bookstore, coffee shops, and so on. (There's also a small but interesting collection of books in the cottage.)
Susanna herself is welcoming and responds quickly to questions. I will look for her AirBnB listing again the next time I plan a trip to San Diego.