1BR - ok I reckon it makes sense that it stands for 1 Bedroom. When it comes to revealing what the movie is about - I reckon it doesn't say much. The German title for the movie "The Appartment" may not be revealing that much either, but there is a subtitle that is quite on the "spoiler" side of things - that's why I won't mention what is being said there.
The poster here may be an indication too, but you know it is a thriller at least if you found your way to this page. I for one did only know that much. It becomes pretty clear what direction this will go ... and while it is mostly psychological horror there is some vivid physical horror and violence too. And there is an ending you may predict or see coming. Once you start something, it's not just as easy as ... switching something off. Interesting premise, nicely played out
