Where will my film be set?

Due to my film being a psychological thriller or something that is somewhat along the lines of this genre, as the person is trapped and has no way of getting out, i decided that the best possible place to base my film would to be to film in it a place which can be related to horror or other psychological film, such as treasure island which is based on an island, which in itself is incapable of being able to escape without authority and a full blown plan. Then the fact that it is based in the middle of the island with high security presents the danger which the protagonist is beginning to get himself into due to nothing that is safe would be protected or hidden away that much.

Therefore this means that i could either base my isolation film in a forest/woods due to they are the typical setting of where a character is trying to escape such as in horrors therefore for the audience they can easily relate to the panic and distress of the persona's dilemma as the scenario is relatable or even recognisable.

However, a typical psychological non escape film is based within a room which the persona cannot escape, such as Saw 1 two men are locked up in a bathroom with only a certain amount of space to move and to escape the room they have to complete certain tasks that saw gives them or he gives them clues towards how they can get out, however the whole suspense to the film is they both do not know how they actually end up there or where they are in general all that they really do know is that they are in a bathroom with a stranger which is the type of film i want to create.

I want to create a film where a person wakes up to be isolated and confused with whats going on, whether or not they are in a dream or whether they are in real life due to them being in a random room/woods with no escape with no memory of how they got there. Of course they would begin to believe that they are in a dream if they have no proof to prove to themselves that it's not? therefore this then leaves the audience uncomfortable and leaves them in suspense as well as leaving them questioning the film a lot thus making them want to watch the rest of the film. Such as wanting to find out whether or not the persona actually does escape, whether or not they find out how they got to the place that they are trapped in or even finding out whether or not it is in fact real life or just a concept of their dreams.

Therefore, to decide where i'm going to film i need to either find a plain room or woods that i can get to be authorized to film in, so from now on in the production process i need to go to both of these kind of places and see which of settings would fit in with my genre of film the best, so that i can produce the best possible short film that i can.