I was just listening to a BP podcast from last month in which one investor had a similar situation. I think he was the first investor they interviewed.
http://biggerpockets.com/show359
Basically, they bought a duplex in San Francisco that had four bedrooms, two baths, and two large dining rooms. They converted the dining rooms into bedrooms for themselves and got roommates for the other four rooms.
They only put down 3% through an FHA loan cosigned and funded by them and their parents, who were getting to keep the rental profit and a portion of the resale profit (I don't remember that number being mentioned.) I think the down payment was like $40K. And their roommates covered the rent and then some.
They want to renovate and sell the units as condos but because of housing laws in San Francisco due to lack of housing, they have to stay in the duplex for at least a year before they can renovate and resell the property. But they'll likely make about 30% profit after fixing it up and reselling for about $1.8M.
That's $540K profit and, even if they split it four ways with their parents, that's going to be $135K each for basically living free of charge. Of course, they had to find the deal but they had a real estate agent find and figure it out.
Pretty sweet deal!