Mountainside Fitness Scottsdale Executive Club At Mountainside Fitness, we take our reputation as being one of the leading fitness centers in Scottsdale, AZ very seriously. In each of our health and fitness centers, our staff genuinely cares about the experience of our Members. Our Scottsdale Waterfront location is designed for Members who work or live in the area and offers a variety of amenities such as a wide variety of state-of-the-art strength equipment, cardio equipment with personal entertainment systems, full-service locker rooms with free towel service and more. To see what our Old Town Scottsdale fitness center has to offer, check our amenities below.