The filming locations for "90 Day: The Last Resort" differ by season:

• Season 1 was filmed at the Isla Bella Beach Resort in the Florida Keys, Florida. This resort is located in Marathon, Florida, and features beautiful oceanfront views, white sand beaches, multiple pools, and tropical scenery. The setting provided a lush, beachside backdrop for the couples' retreat

• Season 2 was filmed at the Omni Scottsdale Resort & Spa at Montelucia in Arizona. This resort is a Spanish-inspired luxury property located near Camelback Mountain in Scottsdale, Arizona. It offers a desert environment with floral walkways, fountains, pools, and upscale amenities such as an award-winning spa and golf courses

In summary, Season 1 took place in a tropical beach resort in Florida, while Season 2 shifted to a desert luxury resort in Arizona.