Selling your self is important in your search profile as well as in written applications sent to the landlord.
Landlords often prefer a detailed description of the applicants, as it provides an impression of who you are and which kind of tenant you will become. Landlord often select their new tenant based on the written application. So a catchy description of you improves the chances of being invited to a viewing. It's a good idea to write a little about yourself, whether you have a fixed income, how long are you planning to lease the property, whether you have pets are a smoker and etc.