For starters, this movie plays out exactly like a fist person shooter video game. The tropes, the dialog, and obviously the camera angle and movement. There's little doubt what this movie is supposed to be and, in all honesty, it does it rather well. The whole first person thing has been tried to a much more limited extent in some movies. House Of The Dead and Doom come to mind. But in these movies it was more for the movie's denouement...a final showdown. In Hotel Inferno it's done throughout and it's kind of enjoyable.
This isn't without it's drawbacks. The camera is jumpy, the dialog is on-par with a video game, and it lacks a bit of continuity. You'll find a 10 minute action sequence ended just to have some exposition on what happened and what will happen next. Again, exactly as you would in a video game. It's like finishing a mission and waiting for a cut scene to tell you what you did and what to do next, except it's a movie. This gets a bit old even if you follow the premise.
For a movie with this budget the special effects are actually quite well done. Gore fans will undoubtedly appreciate the over-the-top violence and gore and others will probably just laugh at the preposterousness of it all. Either way, the special effects team absolutely did the most with what they had.
All in all it's a relatively enjoyable movie if you know what you're in for (and have a six pack of your preferred adult beverage available). It's something a little new but absolutely not without it's flaws. Is it perfect? No. Is it a bit of fun to watch with some friends? Absolutely.