This was not a scary movie, but it wasn't bad, either. Renee was very good at being terrified and creeped out - unfortunately, she was the only one. The movie did not successfully transition "good little girl" to "horrifying whatever-it-is" - she simply wasn't creepy enough in the beginning. The movie also took quite a while to get to the bad stuff - most of the first half was all about Renee's job. And even when things did start to go wrong, it should have been creepy, but it just wasn't. (Also, just to nitpick, what social worker can afford a house like that?!)
If you're looking for an ok movie for a date or something this is fine, but don't expect to be scared.