Reopen Offer: Save 20% Off at Amari Koh Samui by ONYX Hospitality, Thailand. Book 30 days in advance get 20% discount on top of Room & Breakfast rates. Book from 17th August 2015 for staying period 1st April, 2016 to 15th December, 2016. T&C: Hotel will reopen on 01st April, 2016. Book 30 Days in advance. Booking period from now until 15th November, 2016. Staying period from 1st April, 2016 to 15th December, 2016. Book Now.