AMAZING! There is a large sitting room with comfy couches and relaxation chairs, jacuzzi (with columns and an aqueduct-like thing pouring water gently into the jacuzzi), a steam room, sauna, relaxation room and swiss shower in each section (mens/womens separate), as well as plenty of lockers, showers with GREAT hair and body products. (I wish I could buy that shampoo & conditioner - I have no clue who makes it, but it's awesome!) It was a relaxing, phenomenal experience every time we went. :)
Also, the gym facilities are also much nicer than those for guests at the Fairmont.