We asked you to clean and protect the marble used for the entrance. The entrance is an important space for an apartment. As a result, there were many people going in and out, and in a few years the marble had become dirty.
Thanks to having the dirt cleaned and protected, it became beautiful to be mistaken. In addition to being pleased by the residents, I feel like a virtuous cycle in which vacancies are filled immediately. About 5 years have passed since construction, but I'm surprised that it is still clean. I feel like the value of the apartment itself has been raised.