How would one describe the house in "The Listeners" and the situation around it?

I'll start with the basic situation. A man on a horse has arrived at a lone house because he promised that he would. Readers don't know why he promised anything. It is night when he arrives at the house, and he knocks on the door several times. There is no answer at all. It's possible that everybody is asleep. It's possible that nobody is home. It's possible that everybody in the house is dead, and...

I'll start with the basic situation. A man on a horse has arrived at a lone house because he promised that he would. Readers don't know why he promised anything. It is night when he arrives at the house, and he knocks on the door several times. There is no answer at all. It's possible that everybody is asleep. It's possible that nobody is home. It's possible that everybody in the house is dead, and their ghosts are watching the man knock. Regardless, since nobody welcomes the visitor, he leaves.

The house itself isn't described in detail, but some key features are mentioned in the poem. Readers are told that the house is a "lone house." That tells me that the house is not in some kind of city, town, or neighborhood. Line four also tells readers that the house is in or near some kind of forest.

I believe that the house is a two-story house. I think that for two reasons. First, the man is able to see stairs that empty into a hall.

Stood thronging the faint moonbeams on the dark stair,   

   That goes down to the empty hall.

I do not know how the man is capable of seeing that far into a dark house, but he can. Second, I think the house is a two-story house because readers are told that the house has a "turret." I suppose that a turret could be on a one-story house, but I have never seen that before. A turret makes me picture the house like an old castle, but the design feature gained popularity again during the Victorian era. I've linked to a picture of what I believe the house could look like.

A final specific detail about the house itself is that it is likely covered in some kind of leafy, creeping vine. Readers are told that the windows are "leaf-fringed."

No head from the leaf-fringed sill 

Leaned over and looked into his grey eyes. 

That means some kind of plant life is growing all around the windows.