This spa was magical. The saunas, cool pools, spas - all of it was great. I visited in the winter so the spa was especially soothing. I found the facility to be wonderful. I read some other reviews and they are right - the spa is very busy especially on the weekend. I recommend trying to visit during the work week if possible. Regardless of the people I still found it relaxing. I didn't mind faint conversations in the spa or the busy locker room. The receptionists gave a brief explanation of the spa, but if you don't understand the process or have questions there's a help desk near the locker rooms right before you walk outside. There they have videos, a step by step and a digital map of the venue. I relied on that quite a few times.
This area is also mostly francophone. I'm accustomed to Montreal where everyone greets with "Bonjour, Hi" to show that they don't mind English, but Rosemere area leans more towards the French. This made things a little difficult and I certainly felt more shy when I attempted to speak my garbled French, but regardless everyone was kind about it. The masseuse didn't mind and neither did the receptionists.