Kettle needs to be changed. Although the host tried to clean it with natural product but it seems not ok. We could not boil water to make tea.
Since the apartment was converted into apartment from office, the heating system is not good. Therefore, we should use short shower and should wait for half an hour for hot water. Also, should not use TV, washing machine and the kettle at the same time. The electricity will be off.
However, the apartment is a perfect place in the center of Milan.