I think they were intentionally overbooking.
I showed my booking reference, but they told us I shoud move to another hotel nearby after one night because the hotel is full.
The one night stay at the hotel was cold, with moldy bed cover, dirty bathroom and hot water was not available in the bathroom.
We had to move to nearby hotel with their guide, Villa Pumalin, but fortunately it was much better-much cleaner, warmer with hot water.