Staying in Karen's apartment was very convenient! It was right on several bus lines, and a short walk from a place that sold Muni passes, so we could easily take public transportation all around the city. The apartment itself was spacious and comfortable, with all the little things that you don't normally get when you're staying at a hotel -- including washer and dryer and a full kitchen, which was also super convenient. Karen texted and emailed back promptly when we had questions, and magically showed up without me contacting her just when I'd managed to lock myself out.