We stayed one night at Susie's place, and it was exactly what we were looking for! The guest house is separate from the main house and totally private with it's own entrance. The bed is comfortable, the shower is great, and everything was very clean. We had no problem finding parking right outside. The surrounding neighborhood is charming and Susie provided a big list of local suggestions that we found helpful for navigating!
Susie was very responsive and provided clear, detailed instructions for check-in. She even let us check out slightly late so that we could shower after the beach - thanks again for that!
I would highly recommend Susie's place and will try to stay again when I visit San Diego in the future!