We and our two kids had a wonderful time at Kristen's place. The house was comfortable and it was easy to get places using public transport -- the SF bus system was the easiest I've ever seen and the nearest stop was only a 2 minute walk. Lots of great food at the bottom of the hill, just a 10 minute walk (we went to Gialina twice, it was the best pizza!). The house and its yard feel nicely closed-off from the rest of the world, despite being by a main road. We were always so busy heading out into the city that we never managed to try out the hot tub or the trails across the street! For those with kids (ours are 9 and 12) there are tons of books, and sleeping under the skylights was a real treat. The playground across the street was a great easy thing to do. The Exploratorium was our favorite place to visit on this trip, we went twice and still didn't manage to see everything. We really enjoyed staying at Kristen's!