Help with dream interpretations?

So, I have these recurring nightmares. There are three of them, all of them take place in the same house. I can barely recall one of them, so I won't post it here, but the other two, I remember well.

So, this is the one I had last night, I wrote it down as soon as I woke up:

An old house with yellowing walls, an unobtrusive dark wooden door hiding a dark, narrow staircase leading from the second floor to the attic. The second floor is decorated like an elderly woman would have her house decorated, the couch and armchair a light pink colour with a flower design, the round carpet on the ground also a light pink. The comforter on the bed is a thick, beige thing.

The house is dusty, as though nobody's been around in a long time. The air is heavy with the smell of something sweet, perhaps perfume.

I walk around this floor for awhile, somehow feeling a kinship to the person who lived there. Maybe a great-grandmother. It is comforting.

However, I keep being drawn back to that door, back to the one that leads to the attic. I'm terrified of it, my heart is pounding, and I just want to stay away. Every fibre of my body is screaming at me to go back to the main floor, where it's safe, because there are people.

Inevitably, I open the door. The staircase is a fairly short one. The walls are dark wooden panels. The stairs themselves are of the same dark wood. It's claustrophobic in here, and I don't like it. And yet, I ascend.

I'm not sure what the stairs are lit by - there are no ceiling fixtures or sconces, no hanging bulbs. I can just see. It's almost as if the dark, dark walls emit light without being bright. It's eerie.

I reach the top of the stairs, and there's another doorway waiting for me. I know there's something behind the door, in the room beyond, and I know it's not human, surely as I know my own name. I have flashing visions of long, sharp claws ripping me apart, and blood splattering everywhere. It's inevitable. This has happened, is happening, and will happen again for eternity.

I take a deep breath, near tears, knowing my death is upon me, and push open the door.

(There's also an alternative dream to this one where there are a group of five teenagers going up there, and I go up to see what they're up to, and we end up talking, and I warn them about it. They've been sleeping up there, apparently. We get 5 (very small) mattresses to arrange together in a circle so they don't have to worry about the creature in the attic - strength in numbers, I guess. I never make it to the stairs in this dream, but I know if we don't hurry up and get organized and together, the creature will come down for us. Oddly enough, this version of the dream has a lot of Christmas decorations up, especially pine garland with little golden ornaments, forming patterns on the walls.)

In the other dream, there's a massive round door(same dark wood as the stairs to the attic) that leads to a large room full of cushions, with a massive fireplace. There is a thin bookshelf on either side of the door, and then the inside of the room is lined with them, as well. The room is large, and also round. The floor descends like steps, with the middle being an open space, large enough for a few people to lay down in. In the dream, I go into that room to relax, and after awhile the door shuts and locks. Nobody can hear me pounding on the door and shouting to unlock it, and I'm alone, stuck in this room, never to escape.

Can anybody help me puzzle these dreams out?