Kelly's home in San Diego was centrally located. It was an easy walk to the trolley stop at Little Italy, a short walk to an entrance to Balboa Park, and a lovely (longer) walk down to the Gaslamp District. As someone who didn't have a car I appreciated the proximity by foot and transit to everything I wanted to do in the city. Little Italy in particular was a wonderful asset to the neighborhood as it was always populated and well lit, even when walking back late at night. And it had excellent food :)
The room in Kelly's home was clean, the bed was comfortable, and I appreciated that the bedroom door had a lock so I could feel confident in leaving my belongings each day as I went out to explore.
While the stairs up to the apartment door were steep, they were well lit at night so I had no concerns about missing a step. Do note that because Kelly's home is in such a central location there is considerable street traffic noise, even at night. I found that ear plugs allowed me to get the benefit of cool air from open windows while blocking out much of the traffic.
All in all, a great "home base" for my San Diego explorations, and a good spot for a solo traveler without a car.