Why do you suppose that Donald Trump holds meetings at one of his establishments?

Is this a case of tacitly boasting by showing off what he owns? To put the guests at ease in a less formal environment? A financial benefit to his personal pocket by wining and dining at one of his investments?

Correct me if this is wrong, but doesn’t it cost the government much more money than if they were held at the White House or even Camp David? If so, doesn’t he have a budget for this?