I loved it. Very much an amazing summertime horror movie with an interesting twist. Some scenes were gruesome and I had to turn away. Overall, it was terrifying. Reminds me of a 2006 Italian horror film called Last House in the Woods or Il Bosco Fuori, only A Classic Horror Story is much scarier. I also love that it takes place in Calabria where my mother was born. Every time I am in Calabria, I say they should make a horror film there! I also think the bad reviews are undeserved. You really have to appreciate the horror genre, in particular old school slashers to get this film. Horror films are meant to be a bit cheesy and will never rise to the level of dramas. The cast in them will never win best actor or best actress, but the point is to entertain not to be groundbreaking. Personally, I prefer horror.
I also love the cinematography here and the ending is quite beautiful and can definitely be appreciated if you are familiar with Italian summers on the beach.