When I was much younger than now I visited San Francisco two or three times a year. My visits weren’t planned and were a great deal of fun. Most of the trips were spur of the moment. A group of my friends and I would get together for drinks and snacks, and decide to take a long weekend to go to the city by the bay. In those days having a place to stay wasn’t always pre-planned. As it turned out someone in the group would know someone that lived in the City or close to it, there was usually a place to sleep.