Chatrium Hotel Riverside Bangkok! Easter Special Room Only @ Chatrium. Room Only with Free WiFi. Welcome drink upon arrival. Free THB 500 credit per room per stay. Early check in and late check out Early check in and late check out. T&C: No cancellation and changes are allowed. Full Non refundable prepayment of the whole period is required upon the booking confirmation. Booking period 17 February - 30 April 2015. Period of stay 15 March 2015 - 30 April 2015. Book Now.