Earth & Ocean is located inside the W Hotel at 1112 4th Avenue, between Spring and Seneca Street in downtown Seattle. 

From I-5 North

Drive North on Interstate 5
Exit left at Seneca Street (exit 165)
Continue to the hotel entrance on the left, between Fifth and Fourth Avenues

From I-5 South

Drive South on Interstate 5
Take the Union Street exit (exit 165B) 
Stay straight to go onto Union Street
Turn Left onto 5th Avenue
Turn right onto Seneca Street
Continue to the hotel entrance on the left, between Fifth and Fourth Avenues