@Delmas Edwards don't listen to the negative people. There's plenty of opportunities within Detroit nowadays. You're right near the Pointe's, which is great. Hold on to the house and use as much of the rental income to pay down CC's as fast as possible.
I would look into the Detroit Home Mortgage Program: http://www.detroithomemortgage.org/#faq they will work with you to refinance, and it they're doing it for any area in the neighborhood.
Chemical Bank is a small bank that is doing a great job helping folks get mortgages and private loans for homes in Detroit, as well. I used them on a recent 203k for a duplex in the Bagley neighborhood. It took a while to get through the paperwork, but it was well worth it.
https://caliberhomeloans.com/ also has been helping homeowners in the city with non-perfect credit, I would give them a call.
Just keep asking and reaching out. Eventually you will find a private lender or bank that will be willing to help.
And for all the people that don't think it's smart to invest in Detroit, start reading some more about the city. First the businesses move in, then the people follow shortly behind. There's over $5 billion in developments going on in the city currently.
Good luck and keep us posted!