In the interest of full disclosure, I will admit that after living in many parts of the country in a variety of dwelling units, I have come to the conclusion that, Rosemary's Baby notwithstanding, anyone who lives in a house and not an apartment, a multi-family dwelling unit as they call it, is asking for trouble, and, anyone living in a house with no neighbors within 15 feet of them, might just as well call in the Coroner or make an immediate reservation in the local institution for the mentally ill. When I see a film like this, I take it as only natural that the occupants will either be dead, institutionalized or, after much mental and physical anguish, departed for more salubrious housing.
I know nothing of anyone associated with the film in any way, but think that they did a decent job within narrowly circumscribed limits. The lead male seemed already half shot before the couple (with newborn baby) moved into their new surroundings. The woman appeared bewildered from the moment they left for the "country". The other parts were negligible to the central action of the film. It was OK for the creators and Director to play it low key and inexplicable throughout, but not OK for them to provide no meaningful source for the happenings
My recommendation: if you like haunted house movies this is generally acceptable and not a grade B horror film. If you do not like unresolved puzzles, you are likely to be dissatisfied with the film. I saw it and left it with a sense of unease, of incompleteness, a reaction which the Director appears to have wanted.