Unconvincing set
And another thing...
They were obviously in one of those model McMansion homes, except one that wasn't occupied (think the Bluth's model house on Arrested Development). The house was practically empty, as was the fridge, as were all of the bedrooms, and as was the sister's top drawer which contained only her diary and a towel (or something). It didn't look lived-in at all. I think that was the worst part of the movie. They would have been better off doing it in a crew member's grandma's house or something.