Robinson's Hot Tubs & Pools Share: Spas & Hot TubsSpecialty Stores Robinson's Hot Tubs & Pools Visit Website 1725 Airport Rd. Midland, MI 48642 (989) 631-6296 (989) 835-9436 (fax) About Map About All brand spa services, new and refurbished. Caldera authorized dealer What's Nearby? Distance: 5 10 15 20 25 50 mi.