No pun intended - and one of the criticisms many have when they hear others talk about welcoming people and giving them shelter and many other things. So our main character here is being challenged: you are open minded? Put your money where your mouth is (quite literally speaking). And he bites ... sort of. Because he doesn't think anything will come of it.
And the show begins. Or the comedy, because the clash of cultures and status (rich/poor) works quite well. There may have been better movies that showcase that, better comedies even, but this is still quite fun. The movie has a good cast and everyone is doing a good job throughout.
Suspend your disbelief, lower your expectations and see the "homeless" (wanderers? Not sure if there is a politically correct term and I only say that because some people may get or be offended either way) "invade" the rich ... a feelgood movie with some obstacles to say the least.