The kit includes cobblestones, brick wall, frames, windows, doors, stairs, bottle and can. Windows and doors are connected to the wall and as separate elements. The opening window is as a separate frame and a frame connected to window frames. Sciana-Den.Stl and Bruk-Den.STL files are very dense and can cause a problem in print or you can't even open them. Then try to use simplified files: Sciana-S.STL and Bruk-S.STL. The models are Manifold but they contain interscect faces (but this should not interfere with the print). You should adjust the printout scale to the size you need yourself.