Never been to SF but DW and I are staying for two night layover in route to Maui. (Wife has lifelong desire to ride trolley) Basically, we will have one full day to explore. We're looking for hotel in the SFO area with airport shuttle, gym, and preferably a free breakfast. We would like to be within walking distance to shopping and restaurants. There are so many SFO hotels listed, I don't know where to start looking. Any help would be GREATLY appreciated!!