You textured this horribly, with the way you have it set up you might as well stone the entire front of the house. There is no layering at all to break up material/style changes so you have to pick one thing with the way it's set up right now. The number one thing with moderns is laying.
Also your roofs are very thin and do not overhang, both of which are telltale signs modern architecture.
2/10 for the exterior.
As for the inside, your furniture is of classic disign, and does not look simple, sleek, and tight. The layout and choice of actual items to place in the givin space is not to bad though.
4/10 for the interior.