I saw this last night at the London Film Festival and thought it was excellent. I won't say too much because I don't want to spoil it for anyone.
The Lodge fits nicely into the recent trend for slow-burn, arty horror films. It's technically outstanding in terms of photography, sound design and especially production design. The directors cram the frame with religious imagery, not just in the obvious crucifixes and paintings on the walls but where structures and shadows cause crosses to appear. Performances are all first rate. As well as all that, it is at heart a traditional Hammer suspense movie that will remind savvy viewers of BHFs of the 60s and 70s. And it has a pitch-black, even cruel, sense of humour that I'm going to be more aware of during future viewings
Here's an interview with screenwriter Sergio Casci speaking to our old chum Serling: https://www.bbc.co.uk/sounds/play/p08df4q5