Coronoado Springs is the only one.
From allearsnet.com
La Vida Health Club (open 6:00 a.m. to 9:00 p.m) is the first fitness center at a WDW moderately priced resort. It is 3,000 sq feet and has Cybex weight-lifting machines, free weights, step machines, treadmills, and stationary bikes. It also features a Precorps Transport cross training. The health club also has a 200 sqft sauna, manicures, pedicures, facials, massage services, tanning facilities and personal training assistance. One day, Length of Stay and Family Memberships are available for your stay.
As of June 1, 2004, resort guests (age 14 and older) can use the fitness center at no additional charge for the duration of their stay. A parent or legal guardian must accompany children under 17. Guests of other Disney resorts may use the facilities for $12 per day, based on availability. The purchase of a spa treatment includes use of the adjacent fitness center for the day of treatment.