The "Private Project" feature offers you more privacy. Projects completed with this setting will not appear on the L'AiR homepage; only those with the project link can view it.
So, when a user marks a project as a "Private Project," others won't be able to search for this exhibition showroom on the L'AiR Home. However, the URL for this exhibition showroom remains active.
Users who know this URL can visit the webpage but won't be able to interact with you through comments on the L'AiR Home. Users can contact you privately through the website's "Contact Us" feature.