Box in the garden

I have created an interior space made up of a double bed + kitchen + bathroom + outdoor shower.
I enlarged the windows and doors, I also changed their shape, now they are in the shape of an arch. The entire interior space is connected to the exterior through large windows and doors.
I expanded the outdoor space with a wooden pergola and I built a concrete slab, which does not violate the laws, since the space is not closed.
The ladder that allows access to the roof is now safer.
On the roof there are some sun beds and a wooden bench.