This is the best hotel I ever slept in the Madrid airport area, but it could be better. Rooms are clean and comfortable, room service is good and so is the breakfast buffet. The satff is nice and efficient.
But, about the gym:
It has only one unit per equipment (one bycicle, one treadmill, etc).
The equipment is written in Spanish, no other language (on more than an occasion I had to help a guest who did not speak the local language).
I have seen better equipment in other hotels.
And rooms in front of the motorway:
It was my case. I woke up very early in the morning because of the traffic noise.
My room number ended in .36.More