Let's meet at the garden. It's pretty much due north of your current location, so it should be easy to find. So head straight north as I said, for about 11 blocks. Then look at your west. You should see "2 playgrounds" in Chelsea Waterside Park. Right in the middle of that "triangular-ish" shaped park is where the garden is. So it is literally only a couple of steps away from "2 playgrounds".