Take the Chuo expressway to the Kawaguchiko exit, next to Fuji Q Highland.
Go RIGHT on RT 139. Drive 10-15 minutes.
About 2km after the Skylark/Gusto Restaurant and 7-11, you will come to a traffic signal at Rt 71, and a Fire Station.
Stay straight on Rt 139 and 0.8km from that signal you will see the Earth Embassy and Solar Cafe on right side.