Hi chartensimage, I second what the others have said. The vegetation behind the windows look flat. For the first image, at first glance, one might think it was a picture on the wall. Secondly, the choice of vegetation you have chosen might not be the best for composition purposes because it is chaotic and very busy, drawing the eye away from the interior.
If you still want to keep the tree/hedges design you have, I would suggest not piling all of them together. Another thing might be the leaves being too big.Look at some references to get some fresh ideas how vegetation or trees look outside from interiors.
Other than that, the interior render is really good.