You have a lot of hills to choose from in San Francisco but in my opinion the best (and most varied) views are from Bernal Hill. Bonus: from my kitchen table I can watch tiny blobs moving around on this hill-- slow blobs are people, fast blobs are dogs.
Gorgeous view of the city in this park/permanent festival! Any beautiful day of the week you will find so many picnickers, hula hoopers, cute dogs, gay boys in their skivvies, ganja cookie salespeople, crazy weirdos and can collectors, it feels like a neighborhood concert is going on! My kind of place, for sure.