If you have an investment property that you are having a hard time selling you have a number of options. This happens to many investors for one reason or another, but how you wether the storm will determine your success. You can try to refinance the home into a more aggressive mortgage, such as an interest only mortgage, a traditional ARM loan, or even a Pay Option ARM mortgage. By refinancing the mortgage, if this is possible, you may be able to create a better financial situation for yourself by lowering your expenses and producing a more positive cash-flow. Rates are still extremely low and their are some very good programs available that may be able to help you with your situation. If you are able to do this, I would also recommend trying to hold onto the property for a bit longer at least 12-24 months (preferably even longer if you are able to) before looking into trying to sell it again.
If you are selling your investment property by owner and it is not selling you may want to enlist the help of a realtor. With a realtor your investment property will get more exposure to potential borrowers through the MLS listing and marketing by the realtor.
An Investment Property is just that, an INVESTMENT. Like with any other investment, you must add value in order to secure the asset and create gains when executing an exit strategy.
If you're trying to sell because you can't keep up with your investment, you will loose out. There are financing options available that can ease the payment, but still let you keep the investment.
Winners in real estate have holding power. If you've ran into a little fork in the road, talk to your mortgage professional and see how a little creative financing can help save your investments.