As others have mentioned, the lead character has a soft baby-like voice, which is obviously a little distracting since it's my first comment and the first comment made by many other reviewers too. But it's NOT a fatal flaw. In fact, to her credit, her acting is completely credible and her character is both likable and relatable. She could easily be someone's sister, neighbor or friend. I actually think she is very well cast in this film.
After the plot is laid down, there is considerable suspense and tension throughout. Is she being watched? Is she safe? Will she die? Etcetera
Yes, there is some unavoidable cliche in this type of storyline, but my advice is to go with the flow. Most people who like suspense will enjoy this movie because there are enough scare scenes and unknowns to keep it interesting. The scares result from the tension and the unknowns, not because of anything explicit or gory.
This is a lower budget movie. However it never felt homemade. It's easy to fall into the "film student experimental movie" trap but this movie is far from that...it's a legit movie production. So credit where credit is due! Kudos to everyone who worked on this movie.
Definitely worth a watch!