What methods should be used to understand the satisfaction of the owners with the vacant real estate?

After the owner handed over the house, the house was vacant. How can I know the owner's satisfaction with the property? Generally speaking, the property can only be known by telephone or written letter. The problem is that owners don't often come to the community, and occasionally come to the community, and they really don't know anything about the quality of property service. There is no basis for the owners to express their satisfaction with the property, but now they are generally high-grade properties that focus on custody and service. Regularly open windows to ventilate vacant rooms, or check and repair housing quality problems such as rainwater leakage. In this way, the property can make a form and stick it in the vacant room. Every time you enter the room, you can register it on the form, so that the owner can increase his satisfaction with the property after he comes back occasionally. After typing so many words, take my answer, thank you.