I recommend it. The whole monster aspect and horror sequences are a little generic - nothing ground breaking- but you get invested in the two leads and the acting is top notch IMO. I cared about their characters which made the movie work. It has some decent jump scares and a nice dark setting. I thought it was well written and works as more than just a horror film. It is a limited theatrical release with a fairly small budget and does a great job creating atmosphere. I know some were disappointed in the moving looking at other reviews but I think maybe they were expecting a more traditional horror movie. I myself found it to be quite tense, if anything from an emotional aspect.
Review of The Monster
