First, please drop by the church that Is right inside the compound of the hotel, the "caretaker" will lead a prayer for protection just in case the spirits get hostile, nice lady though. The first time I went there I was prevented by the guard who was on duty who rudely casted us out.
The next day, I came done some prayers and of course took some pictures. It's a shame that I went in the morning that it prevented me from exploring it in the dark, the 2nd floor is now blocked, the same floor that a "dark man" was caught on camera by a group of tourist (see it in youtube).
The hotel is said to be once a seminary then the Japanese came and used it as their base, they said that the Japanese massacred priests, nuns, fleeing civilians in that said hotel, after the war and incurring damages the seminary was turned into a hotel, a faith healer owned this place back in the day (forgot his name) and he died back in 1982, since then the hotel was abandoned. Citizens near the hotel tell stories that they can hear celebrations, cries for help, banging of doors inside the facility (but the doors, windows and the hotel is abandoned for years except from occasional visits from Ghost hunters and spirit questers). I have to say that I captured a ghost photo here, the place is eerie the moment you step at the gates. Please proceed with caution and prayer.
If you're in a group where you know you will be protected then by all means stay for God knows how long.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.