Personal use or not for profit rental

Hello,

 

I am here to inquire about my situation. I have this property which I am renting out to a relative at a below fair market price as their main home. I am having trouble determining whether to report this as a personal use property or reporting it as a not for profit rental property. Additionally, if I were to file for either of these, where would I need to report these. Specific forms and line numbers would be much appreciated. Thanks for the guidance.