It turns out a big disappointment because I was told to change to another 'branch' (which is actually a cheaper hostel) when I tried to check in. According to the reception staff, the room I booked was under maintenance and no other rooms were available, so.that I had to move to another 'branch' under the same hotel brand. They arranged a taxi to take me to that branch, but the taxi driver was not sure the place of that branch. I tried to call back the reception more than once, no one answered at all. Finally by asking other.cyclist, I managed to arrive the 'branch'. What a shock that it turned out a cheap and old hostel with no drinking water and dirty towels. Why would I receive this downgrade, with so much hassle? The worst experience I have had in Thailand.