We had a really nice time at Susan's home! The private apartment is really quiet and has a very comfortable bed. Susan was great about checking in with us to make sure we had everything we needed, and she let us keep our bags there after checkout so that we didn't have to haul them around on our tourist adventures on our last day. The apartment is a 5-10 minute walk from lots of great food and libation options. We checked out City Tacos, the Mission North Park, and Dunedin and all three were absolutely excellent.
We didn't have an opportunity to enjoy the grill or other patio amenities because our trip was so short, but the patio looked like a very inviting place to relax on a nice summer night!
A note for anyone who tends to get cold easily: we traveled to San Diego in December and the room generally stayed a little cooler than the outside temperature (great during the day, and I imagine wonderful in summer, but I got a tiny bit chilly from time to time). This isn't a problem for sleeping since Susan provides really nice and warm bedding options, and there is a little electric fireplace in the room that adds some heat, but if you are a person who gets cold easily you may want to pack warm pajamas or a sweatshirt (just in case).