I can't sleep on the underwater bed comfortably.
Even if it provides us with splendid landscape, I can't help but to doubt the safety of the underwater room.
That's because I've never heard the room experienced durability test and never heard it tolerated with water pressure for tens of years.
In addition to such fear, the limitation that visitors have to stay at the hotel at least 4 nights discourages me to visit the hotel. I'd like to hop around many destinations in a short term.