Why is the bed in the hotel bigger than that at home?

The big bed room in the hotel is bigger than home. Because the double bed in the hotel is bigger than that at home. Usually, the bed at home is 1.8*2m, while the big bed room in the hotel is basically 2*2m. Moreover, the big bed rooms in the hotel have been designed to a certain extent, such as mattresses and mattresses, so the beds in the hotel are very large.