Giving this a bump for you, and a comment...I haven't had a massage at the Swan, but I had a facial at GF and I totally LOVED it! Everything about it (except the price of course! but so worth it!) was great! The therapist I had, Michelle, was great, the atmosphere was great, the bed-table thingy was AWESOME (heated!), and the facial, which included a little bit of massage, was great!
Also, if you've never been there before and you choose GF (or if you choose Swan, ask about this), you can use the jacuzzi and sauna facilities, but for the facial treatment, they recommend doing it before, or waiting at least 30 minutes after the treatment. Had we known ahead of time, we would've taken advantage of it.
What we did was had a nice light lunch at the GF Cafe, then went to the spa. Still one of my highlights from my last trip!