I remember advertising my lot for sale in a free classified ads website. It was noticed after the 2nd publication that took 2 weeks. But a serious buyer came up after several months. Nevertheless the advertisement helped and I try to remember that. But now I think social media is more potent with the ads.The only option left for in is to advertise the property on classified ads websites like olx, jiji etc People go to this website to look for something is they really need to buy at cheaper price. You can ask your friend to take picture of the property and upload it to the website.