The first floor is a hotel, and the second floor is a residential building, okay?

Not so good. There will be noise and smoke pollution.

Nowadays, the newly-built houses in many big cities are both commercial and residential, and the flue fans installed in hotels rotate loudly, which is easy to cause noise pollution.

Commercial-residential dual-use houses mix business and residence, which are called "business" and "residence", but they bring a lot of trouble to both sides. In an owners' forum, many owners posted that businesses were seriously disturbing people, and some reflected that business hours ended too late at night.