Holiday Gym Madrid is the leading chain of gyms in Madrid, they have like 16 locations and they are still growing very fast.
The “Holiday Gym Princessa” is located inside the Hotel Marriott next to The Corte Ingles Princessa. It counts with everything you need to get a better body!
The covered pool is nice but only accessible if there is no aqua gym courses (and there are often!).
This is one of the most famous centers of Holiday Gym among the gay community.
It also has an extensive schedule and open all year round.