No one knows, even the people saying they know might not really know. 

Maybe as an add-on to all of the good advice everyone above has given, you might want to think about learning Excel, if you do not already know it.

I have succesfully done this on IGMS PMS software.I would also make sure your email is listed on their VRBO account. you will then be able to get inquiries and messages on your email account so you know when someone messages.

I don’t know whether or not investment in Detroit residential property will make you rich.  

I know exactly where this duplex is---in Broad Ripple over by Mama Corolla's and the Liter House.John Jacobs Real Estate Investor and Private Money Lender  Indianapolis, IN

I've done this with my properties because I'm well known in my small town and don't want people to know what I own.

I'm surprised someone verbally told you you can convert back to a duplex and didn't tell you that you must get permits.from what you are describing it seems the town gave you a hard time because you didn't get permits, I don't know that you have any legal standing to go after the town,  again, I am not an attorney 

I highly recommend a well-qualified REALTOR who works with investors and knows how to help you best.7.

I know the larger companies around here were charging up to 25% but it will probably vary no matter where you are at.  

Ok, then know when in over your head and tap-out!