Sorry to hear that your complex has not been able to sell its condos. I suggest that you price it below market value if you are financially able to do so. You might have a better opportunity to sell if you are the lowest priced condo in the complex. A real estate agent can assist you with marketing by taking quality photos and by creating a virtual tour to show on real estate web sites which should attract some interest. 90% of buyers begin their home search on-line.
Good luck to you!
Prudential Connecticut Realty