I was looking for an unusual tour of San Francisco and this was just perfect. You won't really get stomped by the endless stairs because you're feasted with incredible view. Thanks to June who was willing to start out early in the morning!
Great experience! June customized a tour for us, and we got to see many parts of the city we'd never know existed before. She's extremely meticulous and knowledgable, and also a very chill tour guide. I highly recommend this, though be prepared for the workout!