First of all, in Feng Shui, people can't live on the top floor. This is mainly because the top floor is prone to water leakage, and it is hot in Leng Xia in winter. In case of power failure or accident, it is very difficult to go up and down the stairs.
Secondly, the water pressure on the top floor is unstable. If the property management is improper, water will often be cut off.