When viewed as a stage play It's actually really quite decent if you don't think of it in blockbuster terms. As compared to a lot of films in the genre. You only have to think of it as something so far off a broadway play you're practically in Miami, and it's pretty good. You got your limited number of actors and scenery. But it's better than on a stage. And they chose to use decent quality stock footage instead of bad cgi. This type of zero pretentiousness is a fresh breath honestly.
Just don't do it too often...