How to protect certain inputted information

I have a house rentals website http://www.sacredvalleyhouserentals.com and wish to give my paying members access to contact information for all properties on the website for one month. How do I give access to all visitors to the website to search and find properties but then there are two information sections under each property that I would like to only BE VISIBLE to members. When inputting this contact information under each property in my control panel how do I make this contact information only visible to members please? Thank you.