I own one STW property. About to wrap up the third year. My son and friends lived in it one year. Have a daughter at OSU now but she doesn't live in the house. My kids have always done the rent collecting and the students in it now have always paid on time and many times ahead a month or two or three. If I choose to keep it after my kids are done at OSU, I will hire a management company just for rent collection purposes. No horror stories so far. House needed a ton of work when we bought(mainly cosmetic, exterior and interior paint, severe yard issues, general cleaning). There is always something that needs to be done tho. I include lawn care in my rent so I can control the the way the yard will be cared for. I have a guy who lives nearby that lets me know when it is ready to mow and then he takes care of it. He also does odd jobs whenever needed and is very reasonable.
It took me 18 months of searching to get the right house. Location and potential was critical. This is the time of year to buy as most homes in Stillwater are sold between now and mid summer.