How far should Huzhou build a four-story hotel in the countryside from the private houses?

Huzhou wants to build a four-story hotel in the countryside, and the distance from the private houses should be 15 meters.

When the height of a commercial building is greater than or equal to 4.5 meters, when calculating the plot ratio index, the construction area shall be calculated by multiplying the standard construction area by 1.5 times. The building height of large-scale commercial buildings (such as supermarkets, large shopping malls, specialty stores, restaurants, entertainment and other commercial buildings with concentrated functions) that reach more than 2,000 square meters can be appropriately increased according to functional requirements. The floor area ratio of foyer, lobby, atrium, inner corridor and lighting hall can be calculated according to its actual construction area.