Absolutely agree.
Still, I really enjoyed this. A very well paced (ie, not made for people with ADHD) film with a modern look and feel but a real 70s thriller/horror tone.
I loved how they used the gory/splatter stuff sparingly, so it really stood out when they did use it.
All of the acting was well above par for the genre, especially the mother, Esther and Max (who was incredible throughout). As others have said, you really did care for the characters - unsual in horror films.
Really a very impressive film and has got me very interested in director Jaume Collet-Serra's next film with Liam Neeson.
Also one of those rare horror films where I left the cinema trying to work out how they could do a sequel as I still think there's a lot of mileage in the concept and main character.