Nothing looks wrong to me. Except that the people living there a wasteful ( a lot of lights on during the day don’t you think?). Haha, all jokes a side, the rendering quality is fantastic. The brick could use some more depth in your forth image (maybe it’s the lighting that’s blowing it out), the texture is painfully tiled. That should be a priority fix if you want to add realism. Also add floor molding to this scene; if not all the walls at least the brick wall where it’s dominantly noticeable (Reference image #4). it looks CG, because the wall is clipping with the ground abruptly. So floor molding will help break that up.
In your first image you have that box shape hanging on the wall, you should add a displacement or tessellation map on there to push the realism. Right now that is your biggest pit fall. If this is solely for Arch-vis, then you should have no issue pushing the triangle count. Even in current gen games (and last gen games), used tessellation, so don’t be shy about using extra geometry to get what you want.
Other thank that, you’ve got a very solid piece.