Easiest way of doing this visit is to just take a bus up to the tower. Opted for the more difficult option, walked up Telegraph Hill using the Filbert steps. Took the route from Embarcadero near Pier 19 through Levi’s Plaza up to the base of Filbert steps. It’s a challenging walk up but you do get some wonderful vistas of the bay towards the Bay Bridge and see some very nice houses whose only access is from the steps. Took a leisurely 30 minutes to get up to Coit Tower. Once at the base of the tower, you do get some good views of the City and the bay but would recommend spending the USD10 to go up the lift to the top of the tower. There u have views not blocked by trees of the whole city and Bay Area especially the Transamerica Building. Had the option of taking the bus down but decided on taking Lombard Street down towards Fisherman’s Wharf. All in all a great 3 hours spent to get a feel for the geography of San Francisco.