Profbac, Cosmo actually has two exercise rooms, a smaller one in the East Tower and a much bigger one in the West Tower (or it might be the other way around). I stopped in the East Tower room once, planning to work out, but then changed my mind, walked out and had a big breakfast instead. LOL. Workout area wasn't that big but it was nice. There are specs on the website for the each workout space, even listing the number and kind of machines to give you a sense of things.
I have never checked it out but the spa, at least online, looks nice.
Qua is my favorite spa. I can't imagine a nicer place but I'm a big Cosmo fan and I'm sure the spa is very nice.
JMDLV1, If your wife drinks instant coffee, I believe all of the Terrace Suites have microwaves (I'm bringing popcorn this time) so she could have hot water for her instant coffee. I'm even thinking about bringing a small pot this time. It would be nice to not have to leave the room until you have to and I love the smell of coffee brewing.