How much is the income and expense of managing the hotel?

It depends on how you sign a lease contract with the other apartment, because there are many serviced apartments with ancestral property rights in the industry, and their business types are varied. According to what you said, the hotel will not bear his tax point, but you will. You can ask how people who rent other apartments to hotels operate. It's best to make all the responsibilities clear in the contract. If you don't want to, you can ask the hotel, but you don't mention that the other party must run your atavism apartment at the lowest cost.