Generally 45 hours, small room, medium room; Large rooms, luxury rooms and presidential rooms are generally set at a relatively low level.
However, I suggest that when you go to play, you can directly reduce your consumption (small rooms are generally 300-500, medium rooms are generally 400-600, large rooms are generally 600-800, deluxe rooms are 900- 1800, and presidential rooms 1280-), which is better than paying for a house.