Why are there guest rooms on both sides of the corridor?

It is a layout style.

The guest rooms arranged along both sides of the corridor are called bilateral layout, commonly known as inner corridor layout. Generally for business hotel buildings and comprehensive hotel buildings, the core of the vertical transportation hub of passenger elevator stairs is arranged in a moderate position.

Corridor is a Chinese word, the pinyin is zǒu láng, which means a covered walkway. Guest rooms are places where hotels prepare accommodation, leisure and entertainment services for guests. The hotel will set up different types of rooms according to the different needs and uses of guests. There are usually one or two empty rooms in the home for guests to stay when they come to the house, also called guest rooms. The hotel will set up different types of rooms according to the different needs and uses of guests. The room classification standards for hotels in different regions, different levels, different types, and different brands are not uniform.