I was surprised to find a broad set of offering: thought it would just be like going to a regular gym (instead of using the dark, empty gym in my hotel)... but the pass actually includes boutique studios (I went to a cool HIIT studio downtown), outdoor training sessions in a park, crossfit ... and even fencing and flamenco! (I went for flamenco with my international friends, good fun).
The app is quite simple and intuitive. Only caveat, we forgot a few times to do the check-in at the venues :s I think this could be more explicit in the app... but if you are reading this: check in at the venue!