I saw this about 15 years ago. I believe it is way older than that. The movie is about this bum who breaks in to someone's house. It's during Christmas. I think he stays in this house every winter while the owners are on vacation. This particular year people are stranding from a storm or broke car. He invites them to stay at the house. Then more people show up and it becomes this huge holiday dinner/party. Everyone thinks he owns the house. Then after word they all leave before the owners come back.

If anyone has a clue on this it would be great!

Should be none other than It Happened on Fifth Avenue.