Renting by the room near a university

[Thomas Brady]

Hello Bigger pockets! 

I have a question regarding renting to students. There is a really nice duplex near the University of North Carolina at Charlotte that I am interested in. it currently rents for $2,500/month. $1,250 per side. Which isn't bad because after I calculated all the expenses, it came out to a conservative $200 cash flow per month. not great, but not bad. 

I recently listened to the BP podcast "The riches are in the niches" and was very impressed with the concept of renting by the room in student areas. This duplex is literally 3 miles down the road from the university and is currently being rented by college students. 

I checked Craig's list and looked up renting by the room rates; I found that most rooms are renting anywhere from $350-500/month. This duplex is a 4200 square foot 4/3 duplex (4/3 on each side) 3 of the bedrooms have their own bathrooms. I figure I could conservatively rent each bedroom at $350-375/month which would bring my monthly rent up to      $2,800-2900/month. 

Does anyone have any experience renting a property by the room? are there any downfalls to this, because from my math it would give me an extra $300 in cash flow per month.