It's located on the third floor of a building, and I loved that when you step off the elevator you step right into the studio. It was set up like no other shop I have ever seen.
The yarns are all swatched out for you to see. You can also take yarn and swatch it yourself to see what you like. I wondered around for awhile, and then finally decided on 500 yards of Camuse yarn, a camel down/cashmere blend.
I really liked it there. If I ever make it back to San Francisco, you can bet I will be stopping in again.