Yep -- depends on how "hands on" your students expect you to be. (e.g., you may have negotiate house rules for multiple boarders, etc).
For renters, my suggestion is to arrange for post dated cheques or automatic rent payments before you go. Few people will drop off the rent for an absentee landlord, until they return and ask for it. A challenge may be if your tenant wants to give notice to leave, so work that out in advance.
Then, have a friend, relative, or professional arranged on a call up basis, for a flat fee per service call while you are away, for large issues. Give examples to your tenants of what they can call for, and what can wait until you return.
Have fun!