How to approach?
Ask your self how you respond to someone wanting to rent your car for the day?
You'd first be suspicious, then you'd worry about insurance, and what the risk to you is etc.
Most people would pass on renting their car to a stranger.
But what about driving someone around to run a few harmless errands in areas and locations you knew well.. then it becomes more interesting...
So your approach is. I need you and your apartment for the evening, were going to have a great time, the place will be cleaner then we found it and you can be there every step of the way. Hey you'd be great as the apartment manager.. you want to be IN the movie.. Said part may not be needed in the final movie, but heck you might get lucky..
maybe..??