Answer: incentive, carjoling, persuasion , hospitality
Explanation: this is mostly called incentive. It is an action, words, display that is done or perform to attract customers, business associates and others. In this case, it will make the person feel welcome and He or she will have the experience of your hospitality firsthand.
Little things we do, has an effect on people. Even if the person does not like the house, your hospitality will change her judgement and make her reconsider her decision.