I'm at a vacant shop on 1st Avenue right between a Pharmacy and a Citi Bike.  There's a doctor's office and church on the cross street.  Go about 3 blocks east from where you are at and you'll be on 1st Avenue. Then go about 12 1/2 blocks south and the vacant shop is on the right again next to the Pharmacy (south of it) on the west side of the road.