The influence of noise mainly depends on whether the noise is fixed equipment noise or man-made noise. The noise of fixed equipment is managed by the environmental protection department. Refer to Article 6 of the Law of People's Republic of China (PRC) on the Prevention and Control of Environmental Noise Pollution.
If it is man-made noise, it is difficult to deal with it because there is no law.
As for whether you can open a hotel under a residential building, I don't know where you are. National laws do not explicitly stipulate that hotels cannot be opened under residential buildings, but some local laws and regulations do, so you can consult the local environmental protection department.