I totally can’t wait to re-visit San Francisco. I stayed for 7 days. However, you really only need 4 full days to see the top must do’s, as it’s a small yet beautiful city! Less than 1 Million peeps live in San Fran. I highly advise to prepare your muscles for a lot of up hill walking, I don’t think I’ve ever seen a city with tons of hills literally everywhere. I loved it! I guess I’m so use to (Toronto) my home town being flat.