Hotel Nordic in El Tarter have a pool and a gym and I believe you can pay to use it (so not just guests) but would suggest contacting them in advance. Their website is here
Aside from that it's well worth a visit to the Sport Wellness spa in Soldeu which is superb, and also a trip to Caldea spa in Andorra la Vella is worth doing.
Steve
pool and gym
darren
Hi we will be in the resort over Christmas. I will be skiing with our two grown up daughters. My wife is a non-skier. Are there any gyms or pools or fitness centers in Soldeu that she can pay use over the week? We are staying in El Tarter.
thanks Darren