From Kayaba-cho Station (Hibiya-line and Tozai-line)
You can find Co-Edo on the maps at Kayabacho Station.
From the Exit #3: <br> Walk straight to the direction of Starbucks. Walk pass Starbucks, and go over the short bridge. Walk pass Cafe Veloce, and it is the next building. The building is named "PA building (PAビル)", and we are on 5F. From the Exit #4 or #5: <br> Go across the road to Starbucks, and it is same as above from there. The building look like this (street view): http://goo.gl/maps/4HsKr