PropertyGuru website only allows CEA registered salesperson which subscribe to their service to post advertisment.
Do let me have your unit details, asking price and prefer tenants and i shall help you market it.
Based on your enquiry, I suppose that you do not have any intention to engage an agent to assist you in marketing. Propertyguru is meant for CEA registered salesperson who have subscribed to paid account to put up their listings for marketing.
Owners are advised to list their properties on other property portals (free or paid) or advertise in Classified ads to market their property.
FYI, I have recently rented out a 5room HDB in Jurong West St 61 for $2,800.
If you think that I am able to help you, I am just a call/SMS/email away.
Real Estate Consultant
CEA Reg R014783H