If the cadastral excerpt is oriented north, plot 503, then your terrace faces southeast, right? In the evening you then sit on the terrace in the shade of your own house. The floor plan is really good, but unfortunately the plot orientation *imho* does not fit. This is a "south house," so the terrace should be south to southwest for me.
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The window and the garage are fine. The window just shouldn't be floor-to-ceiling... as already planned, a kitchen unit with work/storage space, almost a dream.
The terrace goes around the corner. So also southwest.
The problem with the garage is that if it stands so far forward, the front garden becomes too (and in relation) the actual garden becomes too small. That is why, from our point of view, the garage must be moved a good deal further back. Unfortunately, the side windows in the kitchen are lost in the process. :/