Is an 8 Bedroom in College Town too risky?

Hi. My mom and I have wanted to get into real estate for a while now and we've started looking. So far, everything is a bust. We have come across an 8 bedroom house in a college town. I was intrigued by it because it's described as a duplex - 4bed/2bath per unit. When we visited, there was only one entrance, so it's really just a big house. Right now, 8 football players are renting, and some might stay for another year. They pay $500 total per room. The house is around 215k. I think it would make great income, but I'm scared it would be too hard to rent out when the football players move out. Can anyone share some insight or advice? Thanks in advance!