Ethos Day Spa Share: Beauty Salons/Spas Ethos Day Spa Visit Website 1035 Spaulding Ave SE Grand Rapids , MI 49546 (616) 361-5559 About Map About The first day spa of its kind in West Michigan. An eco-luxury salon and spa located in Ada Michigan. What's Nearby? Distance: 5 10 15 20 25 50 mi.