Hi Ty, hope all is well man!
There are a lot of scenarios that could potentially come out of this. If you truly want the space leased fast, and because it needs work, I would contact local commercial management companies and sales people and list with them because they might have potential clients looking. If you want to go more hands on deck, I would start calling around to directly contact leads yourself. Sure, you could list a place like this on loop-net or other similar platforms, but considering you're in a small town and it needs some work I think your best bet is going to be just finding an interested buyer (local) who would like to help get things in shape. Try contacting organizations such as local government, church groups, or contact the city chamber to see if they can run an ad for their business investors and entrepreneurs. Sounds like a great place for a gym, cafe, or office space. Also try posting in real estate facebook groups in your area. Whatever you do with pricing and leasing, just make sure utilities and insurance covered at minimum, and that you have a set parameters of just how much renovation will be done so you are aware if its going to interfere with current residents units.
I help new landlords learn how to lease their properties from start to finish. Check out my profile if you're interested in learning more. Good Luck!