Complex sentence: The spa's treatments include massages and other treatments such as botox, zero-gravity yoga, and facials, which are provided either indoors or beachside--there are twenty treatment rooms and forty therapists at the spa.
Split into simpler sentences: The spa's treatments include massages and other treatments such as botox, zero-gravity yoga, and facials, which are provided either indoors or beachside. There are twenty treatment rooms and forty therapists at the spa.