On the Mindahome website click the 'Members area' link in the orange navigation bar below the logo and images and in the one line description of your ad look for the heading 'Action'. Beneath that click the 'Unpublish' link. The 'Status' will change to 'Unpublished' and your profile will no longer be visible.
On the Mindahome website click the 'Edit your ad' tab and then scroll down the page to the 'Visibility' button just above the 'Manage Photos' section. Click the 'Unpublished' button and then click the red 'Submit changes' button at the bottom of the page.