Flash Flexible Room Only with Free Wifi in Chatrium Hotel Riverside Bangkok, Thailand. Stay your way with our Fully Flexible Room rates. You’ll receive a wide range of exclusive privileges including free wifi and lots more. Offer includes: Room Only with Free WiFi. Welcome assorted seasonal fruits. Welcome drink voucher up to 2 registered guests, eligible to use at all available Food & Beverage restaurants, i.e., Lobby Lounge, Pool Bar, Silver Waves, River Barge for either non alcohol and specific alcohol drinks excluding wines, champagnes and other imported drinks. F&B Baht 500 credit once per stay per room can be used as a cash rebate for all the services, i.e., Room charge, Food & Beverage charge, Minibar charge, Business Center and all other managed services by the hotel. T&C: Offer period: Now until 31st October 2015.