Lots of creepy moments.  I love the setting too, the architecture is just totally foreign compared to what I grew up with and love all the plaster and stone textures.  Pre-1980s horror, especially if it takes place in Northern US cities, has such a gothic advantage, to me, over trying to set a mood in a stucco setting, LOL.  
 
Mix in Catholic iconography and you've got some nice flavoring for a horror movie.  Though very different I can't help but think of The Rosary Murders when I think about this one too.

Saw the post about this place on the BD forums (pretty sure) and figured I'd check it out.     I've been a horror fan most of my life but have only been a lurker of horror forums about the last year or so.  Hopefully there'll be some interesting exchanges here.     I'm a visual effects professional and indie filmmaker.  I've worked on a lot of big stuff but am way more interested in smaller genre projects these days.  It's way more fun, though I still love visual effects.     I'm also a longtime anime fan, from back in the C/FO days, pre-internet, trading tapes with people in Japan or people who knew people in Japan, old school.     Anyhoo, glad to see more sites and interest in sharing all things horror.   cheers   Sean