Travel South on the riverfront multi-use path at the Tom McCall Waterfront park. At the south end is River Place Hotel. Take the road (Harbor Way) that runs between the West side of the hotel and Harbor Drive. Harbour Way crosses SW Montgomery St and ends where a multi-use path begins.
Take the multi-use path 1/2 block to the intersection of Harbor Drive and Harrison/River Way. Cross the road 2x at this intersection to the corner diagonally across from where you are. You will find a short staircase (with a bike rut in the middle) that will take you to the end of Water Avenue. You should see a playground. Continue on this road for a few blocks past Sheridan. Water becomes Corbett at the intersection of Water and Sheridan. PDX Code Guild is in the brick building on the left.