Hi there I dont think you are going to get much information on here, I would suggest that you post the same question on the Trip Advisor forum Crete web site
Good luck

Do you mean this place near Hersonnisus?

http://www.analipsi-village.gr/3d/a.marina.htm

Or a chapel In Agia Marina near Chania?

If the latter is the case then the Greek Orthodox Church usuallu only conducts weddings for church members rather than allowing their churches and chapels to be used for civil ceremonies. However, the 'chapel' near to Hersonnisus seems to have been purpose built for non-resddent couples wanting to have a civil ceremony. It's sounds as if it is relatively new so it might be hard to find feedback from people who have used it for their wedding.

Asking on a special wedding site might get a better response but on the other hand a lot of people are going to be on holiday at the moment anyway so it might be worth giving it a bit of time.

SM

Thanks for your replies