Working with team foundation server, you may end up having various publish profiles to publish various configurations. You can specify relative paths in the local folder location by adding something like the following:
\Properties\PublishProfiles folder. So, the 3 back in the path, end up in the solution folder (if there is one).
$(MSBuildProjectDirectory)\..\..\..\Deploy\WebSiteWatch out that the $(MSBuildProjectDirectory) points to the folder that contains the pubxml file, so it points to