会員価格では・・・

21 Days Advance Purchase Rate
Enjoy our Advance Purchase Rate for a discount up to 20% off Best Flexible Rate! Booking is made at least 21 days prior to the date of arrival.
Non modifiable and non refundable rate. Payment required on reservation. The credit card used for booking is required on arrival. Sign up as a member for an additional discount up to 15%.
http://www.citadines.com/en/france/montpellier/citadines-antigone-montpellier/index.html