Review of Guestreservations
They basically take your booking and book through Agoda. Guestreservations.com has no way to contact them (eg. requiring booking codes that they did not give you to cancel a reservation, missing numbers in customer service numbers - 6 digit phone number for the US etc). So I called the hotel and they told me the booking was just made on Agoda. Luckily Amex recognized them as a scam and credited me. But, if you use the reservation, i think it would be ok. However, you can just book on Agoda yourself!BEWARE!