Telegraph Hill?
Technically Russian Hill, but only a few blocks from Telegraph.
Here's the steep reality:

Right right right, man I love the hills of San Fran, reminds me of the bits of Plymouth I lived in when I was little (but even steeper). Wouldn't want to own a car there though.
There are some crazy-ass hills in the city. Sometimes I got the feeling everything (including myself) was going to topple over at any moment. Some of them really test your ability to drive a stick, too. There's nothing like idling in a line of cars on a 20% grade. That'll get your adrenaline pumpin'.