Thai Residents & Expat Local Special @ Chatrium. Thai Residents and expatriates working in Thailand get to enjoy our special rates at Chatrium Residence Sathon Bangkok. Package Includes: Complimentary daily buffet breakfast for up to 2 registered guests. Baht 200 F&B voucher per stay per room maximum 2 vouchers per room. Complimentary in room Wi Fi and wired Internet access maximum 2 IPs. Complimentary usage of Fitness Centre, Sauna and Jacuzzi. 10% discount on food & beverage at the hotel restaurant.