Thank you for your e-mail. We would like to inform you that you need to add one more night on 26 Jan for this booking 15503. You have to pay rate for 26 Jan 2017 you pay add to hotel is 925 THB. And we would like to inform you that for book extra room on 26 - 29 Jan 2017.The special rate is 925 THB/per room/per night. Total for this booking is 925 X 3 = 2,775 THB. However, you must pay for all hotel is 3,700 THB