Although I received the confirmation e-mail from hotel, my reservation was overbooked.
However, there was no words of apology.
Instead, the staff said that they prepared a room for me in another hotel with same quality.
I followed the staff, but the hotel was not at same quality.
No hot water, no wifi, very dirty bed and sheets, so many mosquito in the room...
While I checked inside of room, the staff fled.
It was unacceptable experience.