In Reply to: "Turning 40'" girls trip posted by dfam on Wednesday, 19. February 2014 at 15:32 Bali Time:
Their "Day at Bali Botanica" package is seriously good value - Ayurvedic massage, body scrub, facial and hair creme bath with lunch at Bridges restaurant for around $100 per person (not incl. transport unless you're staying in Ubud).
Prana is lovely but quite costly and I wouldn't say the quality of the service was any better than at Botanica (although the surrounds at Prana are luxurious).
Another great option is the Spa at Semara in Seminyak - hands down the best spa I've been to in Bali. You could combine a trip there with either high tea at Biku across the road (with champers) or cocktails next door at Potato Head.... or do all 3! :-)