Ok, then is httpd_sys_content_t the right one? I solve it as follows:
semanage fcontext -a -t httpd_t "/home/zopeuser/data(/.*)?" chcon -R -t httpd_sys_content_t /home/zopeuser/data
It works now, but is it the correct way?
A small correction there. It should be semanage fcontext -a -t httpd_t "/home/zopeuser/data(/.*)?" chcon -R -t httpd_sys_content_t /home/zopeuser
If you don't give access to the user's root directory, then apache will still fail.