The MH is at the top of a hill, on the California St cable car line but one hill up from the highest point of the Powell St cable car. At the moment the Calif St cable car is down for repairs, so you HAVE to walk up one hill if you take the Powell cable car, or multiple steeeeep hills if you don't. Of course a cab ride could negate that.
I got a wicked upgrade when I used my BOGO at MH, but just be mindful of the lay of the land in SF.