Check out WallDeco-Life-var-93 room with wallpaper and arched window 3D model on CGTrader for $9. High-quality mesh by notfun: 100 polys, 100 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 1.96 MB), OBJ (OBJ, filesize: 1.96 MB), FBX (Autodesk FBX, filesize: 1.97 MB), MAX (Autodesk 3ds Max, filesize: 2.02 MB)