Looking for Pickman

I was reading Pickman's Model, one of my favorite Lovecraft stories, and I realized I recognized most of the places he was talking about in the story. There was the studio on Newbury Street and South Station and there was the North End. In fact, Lovecraft placed Pickman's studio of horrors right smack dab in the middle of the North End on an unnamed street.

But I want to find it. At least, I want to find the general location where the story was set. Since Boston is deadset on staying the same ...