After your sign up, create a profile with the menu item "PROFILE → MANAGE PROFILE" and make it richer of information as possible.
Go to "ADS → NEW AD" and create your ad.
In either enter a lot of photos.
The ad and the profile are both important and describe both how it is done the housing, its characteristics, the context in which it is located and who are you, what do you do and what are the services that you make available.
Try to give all the information that may be relevant to the potential visitor to understand if this is the right solution for him.