My thoughts:
I love smaller builds, you packed in a lot of colour in a small area.
The palm tree on the water doesn't look quite right, I understand why it is that way but does mesh well with the tan sloped bricks.
Hidden gold is great, this is the kind of attention to detail official lego sets have.
Not sure if a real lego set would have the chest being unopenable though.
I think the foilage on the front is fine and not too over the top, however the back might be. I don't feel a set of this size would have that many details on the backside.
And I like the good amount of minifig accessories: numerous bottles, sword, fish & pot, the light and the gun. It's just the right amount for this set.