Making sure they fill in a detailed application form for every person who will be residing at the property.
Undertaking thorough reference checks to ensure they are able to meet the requirements such as paying the rent on time & maintaining the property. You should never sacrifice the quality of a tenant purely for the sake of renting the property quickly.
Verify information; income employment rental history and check a tenancy reference database.
With that in mind; our best tip would be to meet the applicants in person & by having a conversation with them. This is always the best way to ascertain a good impression on who they are and what they’re about.