You are only one person and there is no way that you can do everything that needs to be done to keep your hostel up and running by yourself. The only way that you will survive an endeavor like this is to hire staff and make sure that they are properly trained.
It will be necessary for you to tell your staff exactly what you expect of them and from them, as their way may not be what you envision for your hostel. The training is going to take some time, as every single person you hire will need to learn exactly what they should be doing and saying. However, after a while, they will be able to take care of the hostel as well as you can.
The best thing about having trained staff at your hostel is that it will continue to run smoothly if you ever have an emergency, because your staff will have the right tools to take care of any situation.